#binary-stars — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #binary-stars, aggregated by home.social.
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HD 81809B is a unusual star which consists high abundance of lithium, a very volatile element, and it is easily destroyed in stars.
This is the first binary system to be found with this chemical difference, which is very unusual. Binary systems are 'like siblings' in that they are born from the same molecular cloud, meaning they have the same chemical composition. As with siblings, some differences in element abundances can appear due to physical processes. However, these differences will be much smaller than those of HD 81809. One is that the stars are not 'real siblings' and were born from different molecular clouds containing different elements. The other explanation is that star HD 81809B suffered a more drastic event during its evolution, such as ingesting a planet, which could have changed its chemical composition.
How is this star devouring plants then? Moedas suggests it could be the result of gravitational interactions between the binary stars disrupting the orbit that led to their deaths. Of course, it's almost always gravitational pull.
We can only estimate the amount of planetary material required, which we find to be 75 times the mass of Earth. It is possible that the star ingested three planets, each 25 times more massive than Earth. The event happened a few million years ago, and there are physical processes in the star that will 'clean up' the evidence and try to make the star's chemical abundance similar to that before the event.
https://www.space.com/astronomy/stars/one-of-these-twin-stars-has-likely-been-snacking-on-exoplanets
#Lithium #PlanetEater #HD81809B #BinaryStars #BinarySystem #Exoplanets #Science #Space
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HD 81809B is a unusual star which consists high abundance of lithium, a very volatile element, and it is easily destroyed in stars.
This is the first binary system to be found with this chemical difference, which is very unusual. Binary systems are 'like siblings' in that they are born from the same molecular cloud, meaning they have the same chemical composition. As with siblings, some differences in element abundances can appear due to physical processes. However, these differences will be much smaller than those of HD 81809. One is that the stars are not 'real siblings' and were born from different molecular clouds containing different elements. The other explanation is that star HD 81809B suffered a more drastic event during its evolution, such as ingesting a planet, which could have changed its chemical composition.
How is this star devouring plants then? Moedas suggests it could be the result of gravitational interactions between the binary stars disrupting the orbit that led to their deaths. Of course, it's almost always gravitational pull.
We can only estimate the amount of planetary material required, which we find to be 75 times the mass of Earth. It is possible that the star ingested three planets, each 25 times more massive than Earth. The event happened a few million years ago, and there are physical processes in the star that will 'clean up' the evidence and try to make the star's chemical abundance similar to that before the event.
https://www.space.com/astronomy/stars/one-of-these-twin-stars-has-likely-been-snacking-on-exoplanets
#Lithium #PlanetEater #HD81809B #BinaryStars #BinarySystem #Exoplanets #Science #Space
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HD 81809B is a unusual star which consists high abundance of lithium, a very volatile element, and it is easily destroyed in stars.
This is the first binary system to be found with this chemical difference, which is very unusual. Binary systems are 'like siblings' in that they are born from the same molecular cloud, meaning they have the same chemical composition. As with siblings, some differences in element abundances can appear due to physical processes. However, these differences will be much smaller than those of HD 81809. One is that the stars are not 'real siblings' and were born from different molecular clouds containing different elements. The other explanation is that star HD 81809B suffered a more drastic event during its evolution, such as ingesting a planet, which could have changed its chemical composition.
How is this star devouring plants then? Moedas suggests it could be the result of gravitational interactions between the binary stars disrupting the orbit that led to their deaths. Of course, it's almost always gravitational pull.
We can only estimate the amount of planetary material required, which we find to be 75 times the mass of Earth. It is possible that the star ingested three planets, each 25 times more massive than Earth. The event happened a few million years ago, and there are physical processes in the star that will 'clean up' the evidence and try to make the star's chemical abundance similar to that before the event.
https://www.space.com/astronomy/stars/one-of-these-twin-stars-has-likely-been-snacking-on-exoplanets
#Lithium #PlanetEater #HD81809B #BinaryStars #BinarySystem #Exoplanets #Science #Space
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HD 81809B is a unusual star which consists high abundance of lithium, a very volatile element, and it is easily destroyed in stars.
This is the first binary system to be found with this chemical difference, which is very unusual. Binary systems are 'like siblings' in that they are born from the same molecular cloud, meaning they have the same chemical composition. As with siblings, some differences in element abundances can appear due to physical processes. However, these differences will be much smaller than those of HD 81809. One is that the stars are not 'real siblings' and were born from different molecular clouds containing different elements. The other explanation is that star HD 81809B suffered a more drastic event during its evolution, such as ingesting a planet, which could have changed its chemical composition.
How is this star devouring plants then? Moedas suggests it could be the result of gravitational interactions between the binary stars disrupting the orbit that led to their deaths. Of course, it's almost always gravitational pull.
We can only estimate the amount of planetary material required, which we find to be 75 times the mass of Earth. It is possible that the star ingested three planets, each 25 times more massive than Earth. The event happened a few million years ago, and there are physical processes in the star that will 'clean up' the evidence and try to make the star's chemical abundance similar to that before the event.
https://www.space.com/astronomy/stars/one-of-these-twin-stars-has-likely-been-snacking-on-exoplanets
#Lithium #PlanetEater #HD81809B #BinaryStars #BinarySystem #Exoplanets #Science #Space
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https://www.europesays.com/ie/469027/ For NASA’s TESS, Stellar Eclipses Shed Light on Possible New Worlds #BinaryStars #Éire #ExoplanetDetectionMethods #ExoplanetScience #Exoplanets #GoddardSpaceFlightCenter #IE #Ireland #Science #Space #TESS(TransitingExoplanetSurveySatellite) #TheUniverse
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Massive binary star system may be feeding the Milky Way’s central black hole
A string of small gas clouds near the Milky Way’s central black hole has puzzled astronomers for years.…
#NewsBeep #News #Science #astronomynews #Binarystars #BlackHoles #CA #Canada #G1G2G2tstreamer #G2cloud #galacticcenter #gasclouds #IRS16SW #MilkyWay #MilkyWaycenter #research #SagittariusA #SpaceNews #stellarwinds #supermassiveblackhole
https://www.newsbeep.com/ca/629241/ -
Einstein’s Relativity May Explain the Scarcity of Planets Orbiting Binary Star Systems
📰 Original title: Why two-sun planets keep disappearing scientists blame Einstein
🤖 IA: It's not clickbait ✅
👥 Usuarios: It's not clickbait ✅View full AI summary: https://killbait.com/en/einsteins-relativity-may-explain-the-scarcity-of-planets-orbiting-binary-star-systems/?redirpost=b7abd2b2-f02e-475b-aba9-61edecc9ca39
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Einstein’s Relativity May Explain the Scarcity of Planets Orbiting Binary Star Systems
📰 Original title: Why two-sun planets keep disappearing scientists blame Einstein
🤖 IA: It's not clickbait ✅
👥 Usuarios: It's not clickbait ✅View full AI summary: https://killbait.com/en/einsteins-relativity-may-explain-the-scarcity-of-planets-orbiting-binary-star-systems/?redirpost=b7abd2b2-f02e-475b-aba9-61edecc9ca39
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Einstein’s Relativity May Explain the Scarcity of Planets Orbiting Binary Star Systems
📰 Original title: Why two-sun planets keep disappearing scientists blame Einstein
🤖 IA: It's not clickbait ✅
👥 Usuarios: It's not clickbait ✅View full AI summary: https://killbait.com/en/einsteins-relativity-may-explain-the-scarcity-of-planets-orbiting-binary-star-systems/?redirpost=b7abd2b2-f02e-475b-aba9-61edecc9ca39
-
Einstein’s Relativity May Explain the Scarcity of Planets Orbiting Binary Star Systems
📰 Original title: Why two-sun planets keep disappearing scientists blame Einstein
🤖 IA: It's not clickbait ✅
👥 Usuarios: It's not clickbait ✅View full AI summary: https://killbait.com/en/einsteins-relativity-may-explain-the-scarcity-of-planets-orbiting-binary-star-systems/?redirpost=b7abd2b2-f02e-475b-aba9-61edecc9ca39
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Weekly Update from the Open Journal of Astrophysics – 18/04/2026
It is Saturday morning, and therefore time for yet another update of activity at the Open Journal of Astrophysics. Since the last update we have published a further six papers, bringing the number in Volume 9 (2026) to 82 and the total so far published by OJAp up to 530.
I will continue to include the posts made on our Mastodon account (on Fediscience) to encourage you to visit it. Mastodon is a really excellent service, and a more than adequate replacement for X/Twitter (which nobody should be using); these announcements also show the DOI for each paper.
The first paper to report this week is “Beyond Spherical geometry: Unraveling complex features of objects orbiting around stars from its transit light curve using deep learning” by Ushasi Bhowmick & Shivam Kumaran (Indian Space Research Institute, Ahmedabad, India). This study uses deep neural networks to predict the shape of objects orbiting stars based on their transit light curves, demonstrating the potential to extract geometric information from these systems. It was published on Monday 13th April in the folder Earth and Planetary Astrophysics and the overlay can be seen here:
You can find the officially accepted version on arXiv here and the announcement on Fediverse here:
https://fediscience.org/@OJ_Astro/116395992732332356
The second paper for this week, also published on Monday 13th April but in the folder Astrophysics of Galaxies, is “statmorph-lsst: Quantifying and correcting morphological biases in galaxy surveys” by Elizaveta Sazonova (U. Waterloo, Canada) and an international cast of 18 others. This paper presents an investigation of potential biases in quantitative morphology metrics used in galaxy evolution studies, proposing two new measurements to resolve biases, and provides a related Python package (statmorph-lsst), which can be found here on github.
The overlay for this one is here:
The official version of the paper can be found on arXiv here and the Fediverse announcement here:
https://fediscience.org/@OJ_Astro/116396069424189312
Next one up, the third paper of the week, one of four published on Friday 17th April, is “Disentangling the galactic and intergalactic components in 313 observed Lyman-alpha line profiles between redshift 0 and 5” by Siddhartha Gurung-López (Universitat de València, Spain) and 7 others based in Spain and Germany. Published in the folder Astrophysics of Galaxies, this paper uses the zELDA package to analyze Lyman-alpha photons from star-forming galaxies, revealing IGM effects dominate Lyman-alpha observability at high redshifts, while galactic outflows become more important at lower z.
The overlay for this one is here:
The final, accepted version can be found on arXiv here and the Mastodon announcement is here:
https://fediscience.org/@OJ_Astro/116418831864134501
The fourth paper this week, also published on Friday 17th April is “Using Symbolic Regression to Emulate the Radial Fourier Transform of the Sérsic Profile for Fast, Accurate and Differentiable Galaxy Profile Fitting” by Tim B. Miller (Northwestern University, USA) and Imad Pasha (Yale University, USA). This one is published in the folder Instrumentation and Methods for Astrophysics: it develops an emulator for galaxy profile fitting in Fourier space, improving speed by 2.5 times with minimal accuracy loss, aiding in managing increasing data flow.
The overlay is here:
The finally accepted version of this paper can be found here and the Mastodon announcement follows:
https://fediscience.org/@OJ_Astro/116418855010158656
The fifth paper for this week is “The THESAN project: Lyman-alpha emitters as probes of ionized bubble sizes” by Meredith Neyer (MIT, USA) and 6 others based in the USA, Colombia, Canada, Japan and UK. The study uses THESAN simulations to explore how Lyman-alpha emitters (LAEs) trace ionized bubble sizes during the Epoch of Reionization, providing a framework for interpreting LAE surveys. This was published on Friday 17th April in the folder Astrophysics of Galaxies.
The overlay for this one is here:
You can find the authorized version of this paper on arXiv here and the Fediverse announcement is here:
https://fediscience.org/@OJ_Astro/116418887225003954
The sixth and final paper for this week is “Closed-Form Statistical Relations Between Projected Separation, Semimajor Axis, Companion Mass, and Host Acceleration” by Timothy D Brandt (Space Telescope Science Institute, USA). This was published on Friday 17th April in the folder Solar and Stellar Astrophysics. In this paper the author derives statistical relationships between radial velocity, a companion’s mass, and projected separation, useful for calculations requiring derivatives. The results are verified with empirical comparisons to existing literature.
The overlay for this one is here:
You can find the officially-accepted version on arXiv here and the Mastodon announcement here:
https://fediscience.org/@OJ_Astro/116418938017199814
And that concludes this week’s update. I’ll do another one at the end of next week.
P.S. Just a reminder, for those of you into LinkedIn, that we now have a page there.
#arXiv250303824v4 #arXiv250820266v2 #arXiv250914875v2 #arXiv251018946v2 #arXiv251109644v2 #arXiv260114688v2 #AstrophysicsOfGalaxies #binaryStars #ComputationalAstrophysics #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #DiamondOpenAccessPublishing #EarthAndPlanetaryAstrophysics #EpochOfReionization #galaxyFormation #GalaxyMorphology #galaxyProfiles #InstrumentationAndMethodsForAstrophysics #IntergalacticMedium #Ionization #LAEs #lightCurves #LSST #LymanAlphaEmitters #OpenAccess #OpenAccessPublishing #Orbits #SérsicProfile #SolarAndStellarAstrophysics #statmorphLsst #stellarHalos #strongGravitationalLensing #THESAN #zELDA -
Weekly Update from the Open Journal of Astrophysics – 18/04/2026
It is Saturday morning, and therefore time for yet another update of activity at the Open Journal of Astrophysics. Since the last update we have published a further six papers, bringing the number in Volume 9 (2026) to 82 and the total so far published by OJAp up to 530.
I will continue to include the posts made on our Mastodon account (on Fediscience) to encourage you to visit it. Mastodon is a really excellent service, and a more than adequate replacement for X/Twitter (which nobody should be using); these announcements also show the DOI for each paper.
The first paper to report this week is “Beyond Spherical geometry: Unraveling complex features of objects orbiting around stars from its transit light curve using deep learning” by Ushasi Bhowmick & Shivam Kumaran (Indian Space Research Institute, Ahmedabad, India). This study uses deep neural networks to predict the shape of objects orbiting stars based on their transit light curves, demonstrating the potential to extract geometric information from these systems. It was published on Monday 13th April in the folder Earth and Planetary Astrophysics and the overlay can be seen here:
You can find the officially accepted version on arXiv here and the announcement on Fediverse here:
https://fediscience.org/@OJ_Astro/116395992732332356
The second paper for this week, also published on Monday 13th April Apil in the folder but in the folder Astrophysics of Galaxies, is “statmorph-lsst: Quantifying and correcting morphological biases in galaxy surveys” by Elizaveta Sazonova (U. Waterloo, Canada) and an international cast of 18 others. This paper presents an investigation of potential biases in quantitative morphology metrics used in galaxy evolution studies, proposing two new measurements to resolve biases, and provides a related Python package (statmorph-lsst), which can be found here on github.
The overlay for this one is here:
The official version of the paper can be found on arXiv here and the Fediverse announcement here:
https://fediscience.org/@OJ_Astro/116396069424189312
Next one up, the third paper of the week, one of four published on Friday 17th April, is “Disentangling the galactic and intergalactic components in 313 observed Lyman-alpha line profiles between redshift 0 and 5” by Siddhartha Gurung-López (Universitat de València, Spain) and 7 others based in Spain and Germany. Published in the folder Astrophysics of Galaxies, this paper uses the zELDA package to analyze Lyman-alpha photons from star-forming galaxies, revealing IGM effects dominate Lyman-alpha observability at high redshifts, while galactic outflows become more important at lower z.
The overlay for this one is here:
The final, accepted version can be found on arXiv here and the Mastodon announcement is here:
https://fediscience.org/@OJ_Astro/116418831864134501
The fourth paper this week, also published on Friday 17th April is “Using Symbolic Regression to Emulate the Radial Fourier Transform of the Sérsic Profile for Fast, Accurate and Differentiable Galaxy Profile Fitting” by Tim B. Miller (Northwestern University, USA) and Imad Pasha (Yale University, USA). This one is published in the folder Instrumentation and Methods for Astrophysics: it develops an emulator for galaxy profile fitting in Fourier space, improving speed by 2.5 times with minimal accuracy loss, aiding in managing increasing data flow.
The overlay is here:
The finally accepted version of this paper can be found here and the Mastodon announcement follows:
https://fediscience.org/@OJ_Astro/116418855010158656
The fifth paper for this week is “The THESAN project: Lyman-alpha emitters as probes of ionized bubble sizes” by Meredith Neyer (MIT, USA) and 6 others based in the USA, Colombia, Canada, Japan and UK. The study uses THESAN simulations to explore how Lyman-alpha emitters (LAEs) trace ionized bubble sizes during the Epoch of Reionization, providing a framework for interpreting LAE surveys. This was published on Friday 17th April in the folder Astrophysics of Galaxies.
The overlay for this one is here:
You can find the authorized version of this paper on arXiv here and the Fediverse announcement is here:
https://fediscience.org/@OJ_Astro/116418887225003954
The sixth and final paper for this week is “Closed-Form Statistical Relations Between Projected Separation, Semimajor Axis, Companion Mass, and Host Acceleration” by Timothy D Brandt (Space Telescope Science Institute, USA). This was published on Friday 17th April in the folder Solar and Stellar Astrophysics. In this paper the author derives statistical relationships between radial velocity, a companion’s mass, and projected separation, useful for calculations requiring derivatives. The results are verified with empirical comparisons to existing literature.
The overlay for this one is here:
You can find the officially-accepted version on arXiv here and the Mastodon announcement here:
https://fediscience.org/@OJ_Astro/116418938017199814
And that concludes this week’s update. I’ll do another one at the end of next week.
P.S. Just a reminder, for those of you into LinkedIn, that we now have a page there.
#arXiv250303824v4 #arXiv250820266v2 #arXiv250914875v2 #arXiv251018946v2 #arXiv251109644v2 #arXiv260114688v2 #AstrophysicsOfGalaxies #binaryStars #ComputationalAstrophysics #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #DiamondOpenAccessPublishing #EarthAndPlanetaryAstrophysics #EpochOfReionization #galaxyFormation #GalaxyMorphology #galaxyProfiles #InstrumentationAndMethodsForAstrophysics #IntergalacticMedium #Ionization #LAEs #lightCurves #LSST #LymanAlphaEmitters #OpenAccess #OpenAccessPublishing #Orbits #SérsicProfile #SolarAndStellarAstrophysics #statmorphLsst #stellarHalos #strongGravitationalLensing #THESAN #zELDA -
Weekly Update from the Open Journal of Astrophysics – 18/04/2026
It is Saturday morning, and therefore time for yet another update of activity at the Open Journal of Astrophysics. Since the last update we have published a further six papers, bringing the number in Volume 9 (2026) to 82 and the total so far published by OJAp up to 530.
I will continue to include the posts made on our Mastodon account (on Fediscience) to encourage you to visit it. Mastodon is a really excellent service, and a more than adequate replacement for X/Twitter (which nobody should be using); these announcements also show the DOI for each paper.
The first paper to report this week is “Beyond Spherical geometry: Unraveling complex features of objects orbiting around stars from its transit light curve using deep learning” by Ushasi Bhowmick & Shivam Kumaran (Indian Space Research Institute, Ahmedabad, India). This study uses deep neural networks to predict the shape of objects orbiting stars based on their transit light curves, demonstrating the potential to extract geometric information from these systems. It was published on Monday 13th April in the folder Earth and Planetary Astrophysics and the overlay can be seen here:
You can find the officially accepted version on arXiv here and the announcement on Fediverse here:
https://fediscience.org/@OJ_Astro/116395992732332356
The second paper for this week, also published on Monday 13th April Apil in the folder but in the folder Astrophysics of Galaxies, is “statmorph-lsst: Quantifying and correcting morphological biases in galaxy surveys” by Elizaveta Sazonova (U. Waterloo, Canada) and an international cast of 18 others. This paper presents an investigation of potential biases in quantitative morphology metrics used in galaxy evolution studies, proposing two new measurements to resolve biases, and provides a related Python package (statmorph-lsst), which can be found here on github.
The overlay for this one is here:
The official version of the paper can be found on arXiv here and the Fediverse announcement here:
https://fediscience.org/@OJ_Astro/116396069424189312
Next one up, the third paper of the week, one of four published on Friday 17th April, is “Disentangling the galactic and intergalactic components in 313 observed Lyman-alpha line profiles between redshift 0 and 5” by Siddhartha Gurung-López (Universitat de València, Spain) and 7 others based in Spain and Germany. Published in the folder Astrophysics of Galaxies, this paper uses the zELDA package to analyze Lyman-alpha photons from star-forming galaxies, revealing IGM effects dominate Lyman-alpha observability at high redshifts, while galactic outflows become more important at lower z.
The overlay for this one is here:
The final, accepted version can be found on arXiv here and the Mastodon announcement is here:
https://fediscience.org/@OJ_Astro/116418831864134501
The fourth paper this week, also published on Friday 17th April is “Using Symbolic Regression to Emulate the Radial Fourier Transform of the Sérsic Profile for Fast, Accurate and Differentiable Galaxy Profile Fitting” by Tim B. Miller (Northwestern University, USA) and Imad Pasha (Yale University, USA). This one is published in the folder Instrumentation and Methods for Astrophysics: it develops an emulator for galaxy profile fitting in Fourier space, improving speed by 2.5 times with minimal accuracy loss, aiding in managing increasing data flow.
The overlay is here:
The finally accepted version of this paper can be found here and the Mastodon announcement follows:
https://fediscience.org/@OJ_Astro/116418855010158656
The fifth paper for this week is “The THESAN project: Lyman-alpha emitters as probes of ionized bubble sizes” by Meredith Neyer (MIT, USA) and 6 others based in the USA, Colombia, Canada, Japan and UK. The study uses THESAN simulations to explore how Lyman-alpha emitters (LAEs) trace ionized bubble sizes during the Epoch of Reionization, providing a framework for interpreting LAE surveys. This was published on Friday 17th April in the folder Astrophysics of Galaxies.
The overlay for this one is here:
You can find the authorized version of this paper on arXiv here and the Fediverse announcement is here:
https://fediscience.org/@OJ_Astro/116418887225003954
The sixth and final paper for this week is “Closed-Form Statistical Relations Between Projected Separation, Semimajor Axis, Companion Mass, and Host Acceleration” by Timothy D Brandt (Space Telescope Science Institute, USA). This was published on Friday 17th April in the folder Solar and Stellar Astrophysics. In this paper the author derives statistical relationships between radial velocity, a companion’s mass, and projected separation, useful for calculations requiring derivatives. The results are verified with empirical comparisons to existing literature.
The overlay for this one is here:
You can find the officially-accepted version on arXiv here and the Mastodon announcement here:
https://fediscience.org/@OJ_Astro/116418938017199814
And that concludes this week’s update. I’ll do another one at the end of next week.
P.S. Just a reminder, for those of you into LinkedIn, that we now have a page there.
#arXiv250303824v4 #arXiv250820266v2 #arXiv250914875v2 #arXiv251018946v2 #arXiv251109644v2 #arXiv260114688v2 #AstrophysicsOfGalaxies #binaryStars #ComputationalAstrophysics #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #DiamondOpenAccessPublishing #EarthAndPlanetaryAstrophysics #EpochOfReionization #galaxyFormation #GalaxyMorphology #galaxyProfiles #InstrumentationAndMethodsForAstrophysics #IntergalacticMedium #Ionization #LAEs #lightCurves #LSST #LymanAlphaEmitters #OpenAccess #OpenAccessPublishing #Orbits #SérsicProfile #SolarAndStellarAstrophysics #statmorphLsst #stellarHalos #strongGravitationalLensing #THESAN #zELDA -
Weekly Update from the Open Journal of Astrophysics – 18/04/2026
It is Saturday morning, and therefore time for yet another update of activity at the Open Journal of Astrophysics. Since the last update we have published a further six papers, bringing the number in Volume 9 (2026) to 82 and the total so far published by OJAp up to 530.
I will continue to include the posts made on our Mastodon account (on Fediscience) to encourage you to visit it. Mastodon is a really excellent service, and a more than adequate replacement for X/Twitter (which nobody should be using); these announcements also show the DOI for each paper.
The first paper to report this week is “Beyond Spherical geometry: Unraveling complex features of objects orbiting around stars from its transit light curve using deep learning” by Ushasi Bhowmick & Shivam Kumaran (Indian Space Research Institute, Ahmedabad, India). This study uses deep neural networks to predict the shape of objects orbiting stars based on their transit light curves, demonstrating the potential to extract geometric information from these systems. It was published on Monday 13th April in the folder Earth and Planetary Astrophysics and the overlay can be seen here:
You can find the officially accepted version on arXiv here and the announcement on Fediverse here:
https://fediscience.org/@OJ_Astro/116395992732332356
The second paper for this week, also published on Monday 13th April but in the folder Astrophysics of Galaxies, is “statmorph-lsst: Quantifying and correcting morphological biases in galaxy surveys” by Elizaveta Sazonova (U. Waterloo, Canada) and an international cast of 18 others. This paper presents an investigation of potential biases in quantitative morphology metrics used in galaxy evolution studies, proposing two new measurements to resolve biases, and provides a related Python package (statmorph-lsst), which can be found here on github.
The overlay for this one is here:
The official version of the paper can be found on arXiv here and the Fediverse announcement here:
https://fediscience.org/@OJ_Astro/116396069424189312
Next one up, the third paper of the week, one of four published on Friday 17th April, is “Disentangling the galactic and intergalactic components in 313 observed Lyman-alpha line profiles between redshift 0 and 5” by Siddhartha Gurung-López (Universitat de València, Spain) and 7 others based in Spain and Germany. Published in the folder Astrophysics of Galaxies, this paper uses the zELDA package to analyze Lyman-alpha photons from star-forming galaxies, revealing IGM effects dominate Lyman-alpha observability at high redshifts, while galactic outflows become more important at lower z.
The overlay for this one is here:
The final, accepted version can be found on arXiv here and the Mastodon announcement is here:
https://fediscience.org/@OJ_Astro/116418831864134501
The fourth paper this week, also published on Friday 17th April is “Using Symbolic Regression to Emulate the Radial Fourier Transform of the Sérsic Profile for Fast, Accurate and Differentiable Galaxy Profile Fitting” by Tim B. Miller (Northwestern University, USA) and Imad Pasha (Yale University, USA). This one is published in the folder Instrumentation and Methods for Astrophysics: it develops an emulator for galaxy profile fitting in Fourier space, improving speed by 2.5 times with minimal accuracy loss, aiding in managing increasing data flow.
The overlay is here:
The finally accepted version of this paper can be found here and the Mastodon announcement follows:
https://fediscience.org/@OJ_Astro/116418855010158656
The fifth paper for this week is “The THESAN project: Lyman-alpha emitters as probes of ionized bubble sizes” by Meredith Neyer (MIT, USA) and 6 others based in the USA, Colombia, Canada, Japan and UK. The study uses THESAN simulations to explore how Lyman-alpha emitters (LAEs) trace ionized bubble sizes during the Epoch of Reionization, providing a framework for interpreting LAE surveys. This was published on Friday 17th April in the folder Astrophysics of Galaxies.
The overlay for this one is here:
You can find the authorized version of this paper on arXiv here and the Fediverse announcement is here:
https://fediscience.org/@OJ_Astro/116418887225003954
The sixth and final paper for this week is “Closed-Form Statistical Relations Between Projected Separation, Semimajor Axis, Companion Mass, and Host Acceleration” by Timothy D Brandt (Space Telescope Science Institute, USA). This was published on Friday 17th April in the folder Solar and Stellar Astrophysics. In this paper the author derives statistical relationships between radial velocity, a companion’s mass, and projected separation, useful for calculations requiring derivatives. The results are verified with empirical comparisons to existing literature.
The overlay for this one is here:
You can find the officially-accepted version on arXiv here and the Mastodon announcement here:
https://fediscience.org/@OJ_Astro/116418938017199814
And that concludes this week’s update. I’ll do another one at the end of next week.
P.S. Just a reminder, for those of you into LinkedIn, that we now have a page there.
#arXiv250303824v4 #arXiv250820266v2 #arXiv250914875v2 #arXiv251018946v2 #arXiv251109644v2 #arXiv260114688v2 #AstrophysicsOfGalaxies #binaryStars #ComputationalAstrophysics #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #DiamondOpenAccessPublishing #EarthAndPlanetaryAstrophysics #EpochOfReionization #galaxyFormation #GalaxyMorphology #galaxyProfiles #InstrumentationAndMethodsForAstrophysics #IntergalacticMedium #Ionization #LAEs #lightCurves #LSST #LymanAlphaEmitters #OpenAccess #OpenAccessPublishing #Orbits #SérsicProfile #SolarAndStellarAstrophysics #statmorphLsst #stellarHalos #strongGravitationalLensing #THESAN #zELDA -
Weekly Update from the Open Journal of Astrophysics – 18/04/2026
It is Saturday morning, and therefore time for yet another update of activity at the Open Journal of Astrophysics. Since the last update we have published a further six papers, bringing the number in Volume 9 (2026) to 82 and the total so far published by OJAp up to 530.
I will continue to include the posts made on our Mastodon account (on Fediscience) to encourage you to visit it. Mastodon is a really excellent service, and a more than adequate replacement for X/Twitter (which nobody should be using); these announcements also show the DOI for each paper.
The first paper to report this week is “Beyond Spherical geometry: Unraveling complex features of objects orbiting around stars from its transit light curve using deep learning” by Ushasi Bhowmick & Shivam Kumaran (Indian Space Research Institute, Ahmedabad, India). This study uses deep neural networks to predict the shape of objects orbiting stars based on their transit light curves, demonstrating the potential to extract geometric information from these systems. It was published on Monday 13th April in the folder Earth and Planetary Astrophysics and the overlay can be seen here:
You can find the officially accepted version on arXiv here and the announcement on Fediverse here:
https://fediscience.org/@OJ_Astro/116395992732332356
The second paper for this week, also published on Monday 13th April Apil in the folder but in the folder Astrophysics of Galaxies, is “statmorph-lsst: Quantifying and correcting morphological biases in galaxy surveys” by Elizaveta Sazonova (U. Waterloo, Canada) and an international cast of 18 others. This paper presents an investigation of potential biases in quantitative morphology metrics used in galaxy evolution studies, proposing two new measurements to resolve biases, and provides a related Python package (statmorph-lsst), which can be found here on github.
The overlay for this one is here:
The official version of the paper can be found on arXiv here and the Fediverse announcement here:
https://fediscience.org/@OJ_Astro/116396069424189312
Next one up, the third paper of the week, one of four published on Friday 17th April, is “Disentangling the galactic and intergalactic components in 313 observed Lyman-alpha line profiles between redshift 0 and 5” by Siddhartha Gurung-López (Universitat de València, Spain) and 7 others based in Spain and Germany. Published in the folder Astrophysics of Galaxies, this paper uses the zELDA package to analyze Lyman-alpha photons from star-forming galaxies, revealing IGM effects dominate Lyman-alpha observability at high redshifts, while galactic outflows become more important at lower z.
The overlay for this one is here:
The final, accepted version can be found on arXiv here and the Mastodon announcement is here:
https://fediscience.org/@OJ_Astro/116418831864134501
The fourth paper this week, also published on Friday 17th April is “Using Symbolic Regression to Emulate the Radial Fourier Transform of the Sérsic Profile for Fast, Accurate and Differentiable Galaxy Profile Fitting” by Tim B. Miller (Northwestern University, USA) and Imad Pasha (Yale University, USA). This one is published in the folder Instrumentation and Methods for Astrophysics: it develops an emulator for galaxy profile fitting in Fourier space, improving speed by 2.5 times with minimal accuracy loss, aiding in managing increasing data flow.
The overlay is here:
The finally accepted version of this paper can be found here and the Mastodon announcement follows:
https://fediscience.org/@OJ_Astro/116418855010158656
The fifth paper for this week is “The THESAN project: Lyman-alpha emitters as probes of ionized bubble sizes” by Meredith Neyer (MIT, USA) and 6 others based in the USA, Colombia, Canada, Japan and UK. The study uses THESAN simulations to explore how Lyman-alpha emitters (LAEs) trace ionized bubble sizes during the Epoch of Reionization, providing a framework for interpreting LAE surveys. This was published on Friday 17th April in the folder Astrophysics of Galaxies.
The overlay for this one is here:
You can find the authorized version of this paper on arXiv here and the Fediverse announcement is here:
https://fediscience.org/@OJ_Astro/116418887225003954
The sixth and final paper for this week is “Closed-Form Statistical Relations Between Projected Separation, Semimajor Axis, Companion Mass, and Host Acceleration” by Timothy D Brandt (Space Telescope Science Institute, USA). This was published on Friday 17th April in the folder Solar and Stellar Astrophysics. In this paper the author derives statistical relationships between radial velocity, a companion’s mass, and projected separation, useful for calculations requiring derivatives. The results are verified with empirical comparisons to existing literature.
The overlay for this one is here:
You can find the officially-accepted version on arXiv here and the Mastodon announcement here:
https://fediscience.org/@OJ_Astro/116418938017199814
And that concludes this week’s update. I’ll do another one at the end of next week.
P.S. Just a reminder, for those of you into LinkedIn, that we now have a page there.
#arXiv250303824v4 #arXiv250820266v2 #arXiv250914875v2 #arXiv251018946v2 #arXiv251109644v2 #arXiv260114688v2 #AstrophysicsOfGalaxies #binaryStars #ComputationalAstrophysics #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #DiamondOpenAccessPublishing #EarthAndPlanetaryAstrophysics #EpochOfReionization #galaxyFormation #GalaxyMorphology #galaxyProfiles #InstrumentationAndMethodsForAstrophysics #IntergalacticMedium #Ionization #LAEs #lightCurves #LSST #LymanAlphaEmitters #OpenAccess #OpenAccessPublishing #Orbits #SérsicProfile #SolarAndStellarAstrophysics #statmorphLsst #stellarHalos #strongGravitationalLensing #THESAN #zELDA -
🎩✨ Oh, the riveting world of boolean options! It's like discovering the vast universe inside a binary star 🌌—spoiler alert: it's just two. Meanwhile, the article meanders like a lost tourist in a tech museum, leaving you #pondering if it too is merely an "experimental" concept. 🤔
https://herecomesthemoon.net/2025/11/how-many-options-fit-into-a-boolean/ #booleanoptions #techmuseum #binarystars #experimentalconcept #HackerNews #ngated -
🎩✨ Oh, the riveting world of boolean options! It's like discovering the vast universe inside a binary star 🌌—spoiler alert: it's just two. Meanwhile, the article meanders like a lost tourist in a tech museum, leaving you #pondering if it too is merely an "experimental" concept. 🤔
https://herecomesthemoon.net/2025/11/how-many-options-fit-into-a-boolean/ #booleanoptions #techmuseum #binarystars #experimentalconcept #HackerNews #ngated -
🎩✨ Oh, the riveting world of boolean options! It's like discovering the vast universe inside a binary star 🌌—spoiler alert: it's just two. Meanwhile, the article meanders like a lost tourist in a tech museum, leaving you #pondering if it too is merely an "experimental" concept. 🤔
https://herecomesthemoon.net/2025/11/how-many-options-fit-into-a-boolean/ #booleanoptions #techmuseum #binarystars #experimentalconcept #HackerNews #ngated -
🎩✨ Oh, the riveting world of boolean options! It's like discovering the vast universe inside a binary star 🌌—spoiler alert: it's just two. Meanwhile, the article meanders like a lost tourist in a tech museum, leaving you #pondering if it too is merely an "experimental" concept. 🤔
https://herecomesthemoon.net/2025/11/how-many-options-fit-into-a-boolean/ #booleanoptions #techmuseum #binarystars #experimentalconcept #HackerNews #ngated -
https://www.europesays.com/uk/769277/ Mystery of the missing two-Sun planets may finally be solved: Einstein’s theory reveals why double-Sun worlds vanish | #BinaryStars #CircumbinaryPlanets #DoubleSunPlanets #Einstein'sGeneralRelativity #OrbitalPrecession #Physics #PlanetaryOrbits #Science #UK #UnitedKingdom
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Mystery of the missing two-Sun planets may finally be solved: Einstein’s theory reveals why double-Sun worlds vanish |
Astronomers have long wondered why planets orbiting two stars like the iconic Tatooine in Star Wars are so…
#NewsBeep #News #Physics #BinaryStars #circumbinaryplanets #double-Sunplanets #Einstein'sgeneralrelativity #orbitalprecession #planetaryorbits #Science #UK #UnitedKingdom
https://www.newsbeep.com/uk/428372/ -
Mystery of the missing two-Sun planets may finally be solved: Einstein’s theory reveals why double-Sun worlds vanish |
Astronomers have long wondered why planets orbiting two stars like the iconic Tatooine in Star Wars are so…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Physics #BinaryStars #circumbinaryplanets #double-Sunplanets #Einstein'sgeneralrelativity #orbitalprecession #planetaryorbits #Science
https://www.newsbeep.com/us/471568/ -
Mystery of the missing two-Sun planets may finally be solved: Einstein’s theory reveals why double-Sun worlds vanish |
Astronomers have long wondered why planets orbiting two stars like the iconic Tatooine in Star Wars are so…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Physics #BinaryStars #circumbinaryplanets #double-Sunplanets #Einstein'sgeneralrelativity #orbitalprecession #planetaryorbits #Science
https://www.newsbeep.com/us/471568/ -
https://www.europesays.com/ie/339792/ Mystery of the missing two-Sun planets may finally be solved: Einstein’s theory reveals why double-Sun worlds vanish | #BinaryStars #CircumbinaryPlanets #DoubleSunPlanets #Einstein'sGeneralRelativity #Éire #IE #Ireland #OrbitalPrecession #Physics #PlanetaryOrbits #Science
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https://www.europesays.com/uk/697149/ A Study Appears to Stunningly Contradict Newton and Einstein’s Theory of Gravity #acceleration #AlbertEinstein #BinaryStars #CelestialObjects #DarkMatter #IsaacNewton #ModifiedNewtonianDynamics #NewtonEinstein #Physics #Science #TheoryOfGeneralRelativity #UK #UnitedKingdom
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A Study Appears to Stunningly Contradict Newton and Einstein’s Theory of Gravity
Here’s what you’ll learn when you read this story: Einstein’s Theory of General Relativity, an immensely important update…
#NewsBeep #News #Physics #acceleration #AlbertEinstein #AU #Australia #Binarystars #celestialobjects #darkmatter #IsaacNewton #ModifiedNewtonianDynamics #Newton-Einstein #Science #TheoryofGeneralRelativity
https://www.newsbeep.com/au/412944/ -
A Study Appears to Stunningly Contradict Newton and Einstein’s Theory of Gravity
Here’s what you’ll learn when you read this story: Einstein’s Theory of General Relativity, an immensely important update…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Physics #acceleration #AlbertEinstein #BinaryStars #celestialobjects #Darkmatter #IsaacNewton #ModifiedNewtonianDynamics #Newton-Einstein #Science #TheoryofGeneralRelativity
https://www.newsbeep.com/us/407202/ -
A Study Appears to Stunningly Contradict Newton and Einstein’s Theory of Gravity
Here’s what you’ll learn when you read this story: Einstein’s Theory of General Relativity, an immensely important update…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Physics #acceleration #AlbertEinstein #BinaryStars #celestialobjects #Darkmatter #IsaacNewton #ModifiedNewtonianDynamics #Newton-Einstein #Science #TheoryofGeneralRelativity
https://www.newsbeep.com/us/407202/ -
https://www.europesays.com/ie/284395/ A Study Appears to Stunningly Contradict Newton and Einstein’s Theory of Gravity #acceleration #AlbertEinstein #BinaryStars #CelestialObjects #DarkMatter #Éire #IE #Ireland #IsaacNewton #ModifiedNewtonianDynamics #NewtonEinstein #Physics #Science #TheoryOfGeneralRelativity
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https://www.europesays.com/uk/677584/ NASA Hubble Helps Detect ‘Wake’ of Betelgeuse’s Elusive Companion Star #Astrophysics #AstrophysicsDivision #BinaryStars #GoddardSpaceFlightCenter #HubbleSpaceTelescope #Science #Space #Stars #TheUniverse #UK #UnitedKingdom
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NASA Hubble Helps Detect ‘Wake’ of Betelgeuse’s Elusive Companion Star
Using new observations from NASA’s Hubble Space Telescope and ground-based observatories, astronomers tracked the influence of a recently…
#NewsBeep #News #Space #Astrophysics #AstrophysicsDivision #BinaryStars #GoddardSpaceFlightCenter #HubbleSpaceTelescope #Science #stars #TheUniverse #UK #UnitedKingdom
https://www.newsbeep.com/uk/354575/ -
https://www.europesays.com/ie/269296/ NASA Hubble Helps Detect ‘Wake’ of Betelgeuse’s Elusive Companion Star #astrophysics #AstrophysicsDivision #BinaryStars #Éire #GoddardSpaceFlightCenter #HubbleSpaceTelescope #IE #Ireland #Science #Space #stars #TheUniverse
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NASA Hubble Helps Detect ‘Wake’ of Betelgeuse’s Elusive Companion Star https://science.nasa.gov/missions/hubble/nasa-hubble-helps-detect-wake-of-betelgeuses-elusive-companion-star/ #NASA #Astrophysics #AstrophysicsDivision #BinaryStars #GoddardSpaceFlightCenter #HubbleSpaceTelescope #Stars #TheUniverse
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NASA Hubble Helps Detect ‘Wake’ of Betelgeuse’s Elusive Companion Star https://science.nasa.gov/missions/hubble/nasa-hubble-helps-detect-wake-of-betelgeuses-elusive-companion-star/ #NASA #Astrophysics #AstrophysicsDivision #BinaryStars #GoddardSpaceFlightCenter #HubbleSpaceTelescope #Stars #TheUniverse
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NASA Hubble Helps Detect ‘Wake’ of Betelgeuse’s Elusive Companion Star https://science.nasa.gov/missions/hubble/nasa-hubble-helps-detect-wake-of-betelgeuses-elusive-companion-star/ #NASA #Astrophysics #AstrophysicsDivision #BinaryStars #GoddardSpaceFlightCenter #HubbleSpaceTelescope #Stars #TheUniverse
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NASA Hubble Helps Detect ‘Wake’ of Betelgeuse’s Elusive Companion Star https://science.nasa.gov/missions/hubble/nasa-hubble-helps-detect-wake-of-betelgeuses-elusive-companion-star/ #NASA #Astrophysics #AstrophysicsDivision #BinaryStars #GoddardSpaceFlightCenter #HubbleSpaceTelescope #Stars #TheUniverse
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This Star Is Being Eaten Alive—and Its Explosive Death Will Be Visible in Broad Daylight
A case of astronomical fratricide is doomed to end in a fiery supernova bright enough to be spotted…
#NewsBeep #News #Space #BinaryStars #Science #supernovas #UK #UnitedKingdom #whitedwarf
https://www.newsbeep.com/uk/315624/ -
https://www.europesays.com/uk/631983/ This Star Is Being Eaten Alive—and Its Explosive Death Will Be Visible in Broad Daylight #BinaryStars #Science #Space #Supernovas #UK #UnitedKingdom #WhiteDwarf
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This Star Is Being Eaten Alive—and Its Explosive Death Will Be Visible in Broad Daylight
A case of astronomical fratricide is doomed to end in a fiery supernova bright enough to be spotted…
#NewsBeep #News #Space #Binarystars #CA #Canada #Science #supernovas #whitedwarf
https://www.newsbeep.com/ca/344680/ -
https://www.europesays.com/ie/232418/ This Star Is Being Eaten Alive—and Its Explosive Death Will Be Visible in Broad Daylight #BinaryStars #Éire #IE #Ireland #Science #Space #supernovas #WhiteDwarf
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JWST captured a chaotic triple-star system with two Wolf-Rayet stars.
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JWST captured a chaotic triple-star system with two Wolf-Rayet stars.
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JWST captured a chaotic triple-star system with two Wolf-Rayet stars.
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JWST captured a chaotic triple-star system with two Wolf-Rayet stars.
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JWST captured a chaotic triple-star system with two Wolf-Rayet stars.
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https://www.europesays.com/uk/560764/ TESS finds three Earth-sized exoplanets orbiting binary stars #BinaryStars #exoplanet #RedDwarf #Science #Space #TESS #Toi2267 #UK #UnitedKingdom
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TESS finds three Earth-sized exoplanets orbiting binary stars
…
#NewsBeep #News #Space #BinaryStars #Exoplanet #reddwarf #Science #TESS #toi-2267 #UK #UnitedKingdom
https://www.newsbeep.com/uk/254226/ -
TESS finds three Earth-sized exoplanets orbiting binary stars
…
#NewsBeep #News #Science #AU #Australia #Binarystars #Exoplanet #Reddwarf #TESS #toi-2267
https://www.newsbeep.com/au/274336/ -
It might look a bit...off, at first glance, but hey, there are plenty of bright-white nigh-contact binary stars out there, and Maltese crosses have been proposed as a real shape for these crafts...
My own spacey piece, "Solar sailing round twin suns".
#art #digitalart #digitalpainting #painting #spaceflight #scifiart #scifi #sciencefiction #sciencefictionart #solarsail #spacecraft #stars #binarystars
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It might look a bit...off, at first glance, but hey, there are plenty of bright-white nigh-contact binary stars out there, and Maltese crosses have been proposed as a real shape for these crafts...
My own spacey piece, "Solar sailing round twin suns".
#art #digitalart #digitalpainting #painting #spaceflight #scifiart #scifi #sciencefiction #sciencefictionart #solarsail #spacecraft #stars #binarystars
-
It might look a bit...off, at first glance, but hey, there are plenty of bright-white nigh-contact binary stars out there, and Maltese crosses have been proposed as a real shape for these crafts...
My own spacey piece, "Solar sailing round twin suns".
#art #digitalart #digitalpainting #painting #spaceflight #scifiart #scifi #sciencefiction #sciencefictionart #solarsail #spacecraft #stars #binarystars
-
It might look a bit...off, at first glance, but hey, there are plenty of bright-white nigh-contact binary stars out there, and Maltese crosses have been proposed as a real shape for these crafts...
My own spacey piece, "Solar sailing round twin suns".
#art #digitalart #digitalpainting #painting #spaceflight #scifiart #scifi #sciencefiction #sciencefictionart #solarsail #spacecraft #stars #binarystars
-
1/ 🔭 Massereiche Sterne haben oft einen Partner – sogar im jungen #Universum
Eine neue Studie unter Leitung von Hugues Sana (KU Leuven), mit Beteiligung von Jaime Villaseñor (#MPIA), zeigt: Die meisten massereichen Sterne in der Kleinen Magellanschen Wolke #SMC besitzen einen engen Begleitstern.
#Astronomy #MassiveStars #BinaryStars #NatureAstronomy #MPIA
🔗 Mehr dazu in der Pressemitteilung der KU Leuven
https://fys.kuleuven.be/ster/news/2025/massive-star-in-metal-poor-environment-often-have-close-partner -
1/ 🔭 Massereiche Sterne haben oft einen Partner – sogar im jungen #Universum
Eine neue Studie unter Leitung von Hugues Sana (KU Leuven), mit Beteiligung von Jaime Villaseñor (#MPIA), zeigt: Die meisten massereichen Sterne in der Kleinen Magellanschen Wolke #SMC besitzen einen engen Begleitstern.
#Astronomy #MassiveStars #BinaryStars #NatureAstronomy #MPIA
🔗 Mehr dazu in der Pressemitteilung der KU Leuven
https://fys.kuleuven.be/ster/news/2025/massive-star-in-metal-poor-environment-often-have-close-partner -
1/ 🔭 Massereiche Sterne haben oft einen Partner – sogar im jungen #Universum
Eine neue Studie unter Leitung von Hugues Sana (KU Leuven), mit Beteiligung von Jaime Villaseñor (#MPIA), zeigt: Die meisten massereichen Sterne in der Kleinen Magellanschen Wolke #SMC besitzen einen engen Begleitstern.
#Astronomy #MassiveStars #BinaryStars #NatureAstronomy #MPIA
🔗 Mehr dazu in der Pressemitteilung der KU Leuven
https://fys.kuleuven.be/ster/news/2025/massive-star-in-metal-poor-environment-often-have-close-partner -
1/ 🔭 Massereiche Sterne haben oft einen Partner – sogar im jungen #Universum
Eine neue Studie unter Leitung von Hugues Sana (KU Leuven), mit Beteiligung von Jaime Villaseñor (#MPIA), zeigt: Die meisten massereichen Sterne in der Kleinen Magellanschen Wolke #SMC besitzen einen engen Begleitstern.
#Astronomy #MassiveStars #BinaryStars #NatureAstronomy #MPIA
🔗 Mehr dazu in der Pressemitteilung der KU Leuven
https://fys.kuleuven.be/ster/news/2025/massive-star-in-metal-poor-environment-often-have-close-partner -
A high fraction of close massive #BinaryStars at low metallicity: https://www.astronomie.nl/upload/files/2025/Sana-Bloem-Obinaries-2025.pdf -> Massive stars in metal-poor environment often have close partner: https://www.astronomie.nl/nieuws/en/massive-star-in-metal-poor-environment-often-have-close-partner-4639
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A high fraction of close massive #BinaryStars at low metallicity: https://www.astronomie.nl/upload/files/2025/Sana-Bloem-Obinaries-2025.pdf -> Massive stars in metal-poor environment often have close partner: https://www.astronomie.nl/nieuws/en/massive-star-in-metal-poor-environment-often-have-close-partner-4639
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A high fraction of close massive #BinaryStars at low metallicity: https://www.astronomie.nl/upload/files/2025/Sana-Bloem-Obinaries-2025.pdf -> Massive stars in metal-poor environment often have close partner: https://www.astronomie.nl/nieuws/en/massive-star-in-metal-poor-environment-often-have-close-partner-4639