#astrometry — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #astrometry, aggregated by home.social.
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New in the #VirtualObservatory: “Validation of Gaia EDR3 parallaxes” by El-Badry K. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/506/2269
#Astrometry #ProperMotions #VisibleAstronomy #TrigonometricParallax -
New in the #VirtualObservatory: “CAFOS DR1 point photometric catalog” by Cortes-Contreras M. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/521/3127
#Astrometry #SloanPhotometry #OpticalObservation #Catalogs -
New in the #VirtualObservatory: “HASH. The Hong Kong/AAO/Strasbourg Ha PN DB” by Parker Q.A. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/V/163
#Astrometry #SupernovaRemnants #Surveys #WhiteDwarfStars -
New in the #VirtualObservatory: “SMaSH+ physical properties of O-Stars pairs” by Tramper F. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/711/A236
#StellarDistance #OStars #Astrometry #Interferometry -
Hubble and Webb uncover Omega Centauri’s first stellar-mass black hole after 23 years of observations
For decades, Omega Centauri has presented astronomers with a paradox. The Milky Way’s largest globular cluster contains roughly…
#NewsBeep #News #Space #astrometry #Astronomy #AU #Australia #Blackhole #globularcluster #Gravitationalwaves #HubbleSpaceTelescope #Jameswebbspacetelescope #OmegaCentauri #Science #Stellar-massblackhole
https://www.newsbeep.com/au/822934/ -
Hubble and Webb uncover Omega Centauri’s first stellar-mass black hole after 23 years of observations
For decades, Omega Centauri has presented astronomers with a paradox. The Milky Way’s largest globular cluster contains roughly…
#NewsBeep #News #Space #astrometry #Astronomy #AU #Australia #Blackhole #globularcluster #Gravitationalwaves #HubbleSpaceTelescope #Jameswebbspacetelescope #OmegaCentauri #Science #Stellar-massblackhole
https://www.newsbeep.com/au/822934/ -
Hubble and Webb uncover Omega Centauri’s first stellar-mass black hole after 23 years of observations
For decades, Omega Centauri has presented astronomers with a paradox. The Milky Way’s largest globular cluster contains roughly…
#NewsBeep #News #Space #astrometry #astronomy #BlackHole #globularcluster #gravitationalwaves #HubbleSpaceTelescope #jameswebbspacetelescope #OmegaCentauri #Science #Stellar-massblackhole #UK #UnitedKingdom
https://www.newsbeep.com/uk/709996/ -
https://www.europesays.com/ie/603151/ Hubble and Webb uncover Omega Centauri’s first stellar-mass black hole after 23 years of observations #astrometry #Astronomy #BlackHole #Éire #GlobularCluster #GravitationalWaves #HubbleSpaceTelescope #IE #Ireland #JamesWebbSpaceTelescope #OmegaCentauri #Science #Space #StellarMassBlackHole
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Precision Astrometry Using Optically Independent Spacecraft for Graviational Wave Detection
https://atlas.whatip.xyz/post.php?slug=precision-astrometry-using-optically-independent-spacecraft-for-graviational-wave-detection
Key insight: <p>Paul StankusBrookhaven Science Associates&#160
#gravitational #independent #astrometry #precision -
New in the #VirtualObservatory: “NETS. II. RV & astrometry of 7 star systems” by Giovinazzi M.R. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/170/52
#Spectroscopy #VisibleAstronomy #InfraredAstronomy #Astrometry -
New in the #VirtualObservatory: “HECATE nearby galaxies stellar properties” by Kovlakas K. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/506/1896
#Redshifted #RadialVelocity #GalaxyClassificationSystems #Astrometry -
New in the #VirtualObservatory: “Galaxy Zoo barred galaxies properties with MaNGA” by Geron T. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/521/1775
#GalaxyRadii #Astrometry #Redshifted #Galaxies -
New in the #VirtualObservatory: “NESSI: resolving wide binaries in Gaia & SUPERWIDE” by Hartman Z.D. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/170/91
#Photometry #MultipleStars #Astrometry #ProperMotions -
New in the #VirtualObservatory: “ALMA observations counterparts of SDSS dr14Q” by Wong A. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/523/23
#VisibleAstronomy #Photometry #Spectroscopy #Astrometry -
Ho integrato lo spazio profondo nella mia dashboard di Home Assistant! #APOD della #NASA, posizione della #ISS e lanci spaziali live. Con REST sensor, API e multiscrape, il tuo pannello domotico può diventare una finestra sul #cosmo. Voi cosa ne pensate? #HomeAssistant #automazione
https://gabrielebaldassarre.com/home-assistant/dashboard-astrometria-parte-3/
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Ho integrato lo spazio profondo nella mia dashboard di Home Assistant! #APOD della #NASA, posizione della #ISS e lanci spaziali live. Con REST sensor, API e multiscrape, il tuo pannello domotico può diventare una finestra sul #cosmo. Voi cosa ne pensate? #HomeAssistant #automazione
https://gabrielebaldassarre.com/home-assistant/dashboard-astrometria-parte-3/
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New in the #VirtualObservatory: “AST3-2 SN point source automatic survey” by Yang X. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/520/5635
#Supernovae #Photometry #Astrometry #Exoplanets -
New in the #VirtualObservatory: “The gamma/optical flares of 4FGL-DR3 blazars” by De Jaeger T. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/519/6349
#Galaxies #GammaRayBursts #Redshifted #Astrometry -
New in the #VirtualObservatory: “Properties of new members in stellar group ASCC 127” by Wang F. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/170/24
#StarFormingRegions #Astrometry #RadialVelocity #ProperMotions -
New in the #VirtualObservatory: “New ASAS-SN variable stars using g band lcs” by Christy C.T. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/519/5271
#Photometry #Astrometry #VisibleAstronomy #AstronomicalObjectIdentification -
New in the #VirtualObservatory: “Accretion diagnostics with JWST/MIRI of YSOs” by Shridharan B. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/708/A22
#StellarDistance #StellarMassLoss #Extinction #Astrometry -
https://www.europesays.com/ie/409500/ A Planetary Illusion’s Funeral: Non-detection of a Gaia DR3 Exoplanet Candidate, and the Role of Intermediate-precision Radial Velocities in Gaia Exoplanet Follow-up #AstroPhEP #astrometry #Éire #Exoplanet #GaiaDR3 #HD12800 #Https://astrobiologyCom/2026/03/astronomy #Https://astrobiologyCom/2026/03/imaging #IE #Ireland #Science #spectrograph #StellarCartography #TRES
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New in the #VirtualObservatory: “Rotation-based census of blue lurkers” by Jadhav V.V. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/707/A275
#MilkyWayGalaxy #OpenStarClusters #Astrometry #UltravioletAstronomy -
New in the #VirtualObservatory: “Gaia DR3 eclipsing binaries light curves SSA” by GAIA Collaboration
https://skvo.science.upjs.sk/gaiadr3_eb/q/ssa/info
#LightCurves #Surveys #Astrometry #VariableStars -
New in the #VirtualObservatory: “Gaia DR3 EB Cone Search” by GAIA Collaboration
https://skvo.science.upjs.sk/gaiadr3_eb/t/gdr3cone/info
#Astrometry #Surveys #VariableStars -
New in the #VirtualObservatory: “SMGPS cross-matched with eROSITA/ROSAT and GaiaDR3” by Egbo O.D. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/707/A193
#Astrometry #VisibleAstronomy #XRaySources #RadioSources -
New in the #VirtualObservatory: “Discovery of bright z~=7 LBGs in Euclid COSMOS” by Varadaraj R.G. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/707/A239
#Galaxies #Astrometry #Redshifted #AbsoluteMagnitude -
New in the #VirtualObservatory: “ALMACAL IX calibrators for DSFGs/SMGs sources” by Chen J. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/518/1378
#Astrometry #Quasars #RadioSources #SubmillimeterAstronomy -
New in the #VirtualObservatory: “H I gas properties in paired galaxies with WALLABY” by Kim S.-J. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/519/318
#GalaxyKinematics #RadialVelocity #Astrometry #Spectroscopy -
New in the #VirtualObservatory: “Lensing/SED-fit of 78 high-z RELICS galaxies” by Neufeld C. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/516/2162
#Astrometry #StellarMasses #Galaxies #GravitationalLensing -
New in the #VirtualObservatory: “Tidal tails of nearby open clusters” by Risbud D. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/694/A258
#OpenStarClusters #MilkyWayGalaxy #VisibleAstronomy #Astrometry -
New in the #VirtualObservatory: “Bar morphologies of HSC-SSP disc galaxies” by La Marca A. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/707/A152
#InteractingGalaxies #ActiveGalacticNuclei #Astrometry #InfraredPhotometry -
New in the #VirtualObservatory: “Isolated single-pulse pulsar candidates” by Houben L.J.M. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/707/A10
#RadioSources #Pulsars #Astrometry #GalaxyKinematics -
New in the #VirtualObservatory: “MUSE M33 HII regions catalog” by Feltre A. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/706/A367
#VisibleAstronomy #Astrometry #Extinction #ChemicalAbundances -
New in the #VirtualObservatory: “Phoebe precise CCD positions using Gaia DR3” by Wang N. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/PSS/271.07240
#SolarSystem #SolarSystemPlanets #Astrometry -
https://www.europesays.com/ie/314345/ Is a surprisingly massive exomoon orbiting this big exoplanet? #astrometry #Éire #ExoMoons #Exoplanets #IE #Ireland #MassiveExomoon #Science #Space
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New in the #VirtualObservatory: “Zorro/Gemini-South astrometric data of binary stars” by Mendez R.A. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/169/226
#Astrometry #InfraredPhotometry #MultipleStars #Orbits -
https://www.europesays.com/ie/304065/ Astronomers identify a possible massive moon with water orbiting a distant world | #astrometry #Astronomy #DistantWorldsSearch #Éire #ExomoonDiscovery #HD206893B #IE #Ireland #MassiveMoonsInSpace #Science #WaterInExoplanetAtmosphere
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New in the #VirtualObservatory: “Tidal tails in open clusters” by Sharma I. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/704/A167
#Surveys #OpenStarClusters #MilkyWayGalaxy #Astrometry -
New in the #VirtualObservatory: “Tidal tails in open clusters” by Sharma I. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/704/A167
#Surveys #OpenStarClusters #MilkyWayGalaxy #Astrometry -
For the first time, scientists may have discovered an exomoon located 133 light-years from Earth
Many m…
#NewsBeep #News #Space #arXiv #astrometry #astronomy #Astrophysics #benchmarks #Earth #Enceladus #exomoon #ExoMoons #Exoplanet #gasgiant #graphicscard #gravity #Habitability #HD206893b #Kepler1625b #Kepler1708b #laptop #moon #netbook #notebook #planet #processor #reports #review #Reviews #Science #solarsystem #test #tests #UK #UnitedKingdom #Universe #VLTI
https://www.newsbeep.com/uk/294475/ -
Earth orientation parameters (Earth 🌍)
In geodesy and astrometry, earth orientation parameters describe irregularities in the rotation of planet Earth. EOP provide the rotational transform from the International Terrestrial Reference System to the International Celestial Reference System, or vice versa, as a function of time. Earth's rotational velocity is not constant over time.
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Earth orientation parameters (Earth 🌍)
In geodesy and astrometry, earth orientation parameters describe irregularities in the rotation of planet Earth. EOP provide the rotational transform from the International Terrestrial Reference System to the International Celestial Reference System, or vice versa, as a function of time. Earth's rotational velocity is not constant over time.
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Earth orientation parameters (Earth 🌍)
In geodesy and astrometry, earth orientation parameters describe irregularities in the rotation of planet Earth. EOP provide the rotational transform from the International Terrestrial Reference System to the International Celestial Reference System, or vice versa, as a function of time. Earth's rotational velocity is not constant over time.
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Earth orientation parameters (Earth 🌍)
In geodesy and astrometry, earth orientation parameters describe irregularities in the rotation of planet Earth. EOP provide the rotational transform from the International Terrestrial Reference System to the International Celestial Reference System, or vice versa, as a function of time. Earth's rotational velocity is not constant over time.
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Third Interstellar Object Discovered
https://minorplanetcenter.net/mpec/K25/K25N12.html
#ycombinator #astrometry #observations #orbits #minor_planets #asteroids #comets #near_earth_objects #potentially_hazardous_asteroids -
Third Interstellar Object Discovered
https://minorplanetcenter.net/mpec/K25/K25N12.html
#ycombinator #astrometry #observations #orbits #minor_planets #asteroids #comets #near_earth_objects #potentially_hazardous_asteroids -
Third Interstellar Object Discovered
https://minorplanetcenter.net/mpec/K25/K25N12.html
#ycombinator #astrometry #observations #orbits #minor_planets #asteroids #comets #near_earth_objects #potentially_hazardous_asteroids -
Weekly Update from the Open Journal of Astrophysics – 24/05/205
It’s time once again for the regular Saturday update of papers published during the past week at the Open Journal of Astrophysics. Since the last update we have published three new papers, which brings the number in Volume 8 (2025) up to 62 and the total so far published by OJAp up to 297.
In chronological order of publication, the three papers published this week, with their overlays, are as follows. You can click on the images of the overlays to make them larger should you wish to do so.
The first paper to report is: “Jet-shaped filamentary ejecta in common envelope evolution” by Ron Schreier, Shlomi Hillel and Noam Soker (Technion, Haifa, Israel). This paper, which was published on Monday May 19th 2025 in the folder High-Energy Astrophysical Processes, presents three-dimensional hydrodynamical simulations of common envelope evolution of a neutron star inside the envelope of a rotating red supergiant with Rayleigh-Taylor instabilities forming filamentary ejecta.
The overlay is here:
You can find the officially accepted version on arXiv here.
Second one up is “Weighing The Options: The Unseen Companion in LAMOST J2354 is Likely a Massive White Dwarf” by M. A. Tucker, A. J. Wheeler & D. M. Rowan (Ohio State University, USA) and M. E. Huber (U. Hawaii, USA). This paper was published on Tuesday 20th May 2025 in the folder for Solar and Stellar Astrophysics. It discusses a spectroscopic study of the binary system LAMOST J235456.73+335625 (J2354) with a discussion of the implications for the nature of the dark component.
The overlay is here:
You can find the officially-accepted version of the paper on arXiv here.
The third and last paper of the week, published on Thursday May 22nd 2025, also in the folder Solar and Stellar Astrophysics, is “How to use Gaia parallaxes for stars with poor astrometric fits” by Kareem El-Badry (Caltech, USA). This paper presents a method for extracting reasonable estimates of stellar parallaxes from Gaia data when the overall astrometric solution is unreliable due to errors and noise
Here is the overlay:
You can find the officially accepted version of this paper on arXiv here.
That’s all the papers for this week. Looking at the publishing workflow, I expect we will pass the 300 mark next week. We’ll see when I post the next update next Saturday.
#arXiv240719004v2 #arXiv250109663v3 #arXiv250411528v2 #astrometry #binaryStars #commonEnvelopeEvolution #DiamondOpenAccess #GAIA #HighEnergyAstrophysicalPhenomena #hydrodynamics #LAMOSTJ2354 #LAMOSTJ23545673335625 #OpenJournalOfAstrophysics #parallax #SolarAndStellarAstrophysics #stars #TheOpenJournalOfAstrophysics #whiteDwarfs
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Weekly Update from the Open Journal of Astrophysics – 24/05/205
It’s time once again for the regular Saturday update of papers published during the past week at the Open Journal of Astrophysics. Since the last update we have published three new papers, which brings the number in Volume 8 (2025) up to 62 and the total so far published by OJAp up to 297.
In chronological order of publication, the three papers published this week, with their overlays, are as follows. You can click on the images of the overlays to make them larger should you wish to do so.
The first paper to report is: “Jet-shaped filamentary ejecta in common envelope evolution” by Ron Schreier, Shlomi Hillel and Noam Soker (Technion, Haifa, Israel). This paper, which was published on Monday May 19th 2025 in the folder High-Energy Astrophysical Processes, presents three-dimensional hydrodynamical simulations of common envelope evolution of a neutron star inside the envelope of a rotating red supergiant with Rayleigh-Taylor instabilities forming filamentary ejecta.
The overlay is here:
You can find the officially accepted version on arXiv here.
Second one up is “Weighing The Options: The Unseen Companion in LAMOST J2354 is Likely a Massive White Dwarf” by M. A. Tucker, A. J. Wheeler & D. M. Rowan (Ohio State University, USA) and M. E. Huber (U. Hawaii, USA). This paper was published on Tuesday 20th May 2025 in the folder for Solar and Stellar Astrophysics. It discusses a spectroscopic study of the binary system LAMOST J235456.73+335625 (J2354) with a discussion of the implications for the nature of the dark component.
The overlay is here:
You can find the officially-accepted version of the paper on arXiv here.
The third and last paper of the week, published on Thursday May 22nd 2025, also in the folder Solar and Stellar Astrophysics, is “How to use Gaia parallaxes for stars with poor astrometric fits” by Kareem El-Badry (Caltech, USA). This paper presents a method for extracting reasonable estimates of stellar parallaxes from Gaia data when the overall astrometric solution is unreliable due to errors and noise
Here is the overlay:
You can find the officially accepted version of this paper on arXiv here.
That’s all the papers for this week. Looking at the publishing workflow, I expect we will pass the 300 mark next week. We’ll see when I post the next update next Saturday.
#arXiv240719004v2 #arXiv250109663v3 #arXiv250411528v2 #astrometry #binaryStars #commonEnvelopeEvolution #DiamondOpenAccess #GAIA #HighEnergyAstrophysicalPhenomena #hydrodynamics #LAMOSTJ2354 #LAMOSTJ23545673335625 #OpenJournalOfAstrophysics #parallax #SolarAndStellarAstrophysics #stars #TheOpenJournalOfAstrophysics #whiteDwarfs
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New dwarf planet found in our solar system
https://www.minorplanetcenter.net/mpec/K25/K25K47.html
#ycombinator #astrometry #observations #orbits #minor_planets #asteroids #comets #near_earth_objects #potentially_hazardous_asteroids -
New dwarf planet found in our solar system
https://www.minorplanetcenter.net/mpec/K25/K25K47.html
#ycombinator #astrometry #observations #orbits #minor_planets #asteroids #comets #near_earth_objects #potentially_hazardous_asteroids -
New dwarf planet found in our solar system
https://www.minorplanetcenter.net/mpec/K25/K25K47.html
#ycombinator #astrometry #observations #orbits #minor_planets #asteroids #comets #near_earth_objects #potentially_hazardous_asteroids -
Does anyone have an alternative to Astrometry.net? It appears to be down right now.
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Does anyone have an alternative to Astrometry.net? It appears to be down right now.
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Does anyone have an alternative to Astrometry.net? It appears to be down right now.
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Does anyone have an alternative to Astrometry.net? It appears to be down right now.
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Inktober 52 2025 - Week 4 - 'Aquarius'
Combining the Lunar new year animal with the star sign it's rising from!
#inktober #inktober52 #snake #aquarius #water #stars #starsign #constellation #zodiac #astrology #astrometry -
Farewell to Gaia
Artist impression of ESA’s Gaia satellite observing the Milky Way. The background image of the sky is compiled from data from more than 1.8 billion stars. Spacecraft: ESA/ATG medialab; Milky Way: ESA/Gaia/DPAC. Acknowledgement: A. MoitinhoToday (15th January 2025) marks the end of an era. The European Space Agency’s Gaia spacecraft stops taking data today as it is running out of the gas propellant needed to keep it scanning the sky. The spacecraft was launched on 19 December 2013 so has been operating for just over 11 years.
For those of you not in the know, Gaia is a global space astrometry mission, whose mission was to make the largest, most precise three-dimensional map of our Galaxy by surveying more than a billion stars. Gaia was to monitor each of its target stars about 70 times over a five-year period. Alongside this core mission, it has also discovered hundreds of thousands of new celestial objects, such as extra-solar planets and brown dwarfs, and observed hundreds of thousands of asteroids within our own Solar System.
Gaia is creating an extraordinarily precise three-dimensional map of more than a thousand million stars throughout our Galaxy (The Milky Way) and beyond, mapping their motion, luminosity, temperature and chemical composition as well as any changes in such properties. This huge stellar census will provide the data needed to tackle an enormous range of important problems related to the origin, structure and evolutionary history of our Galaxy. Gaia does this by repeatedly measuring the positions of all objects down to an apparent magnitude of 20. A billion stars is about 1% of the entire stellar population of the Milky Way.
For the brighter objects, i.e. those brighter than magnitude 15, Gaia measures their positions to an accuracy of 24 microarcseconds, comparable to measuring the diameter of a human hair at a distance of 1000 km. Distances of relatively nearby stars are measured to an accuracy of 0.001%. Even stars near the Galactic Centre, some 30,000 light-years away, have their distances measured to within an accuracy of 20%.
The huge quantity of high-precision data Gaia has produced constitutes a tremendously influential resource for astronomical research. The fourth data release from Gaia, DR4, is in the pipeline for completion soon but the final data release (DR5) will take some years to appear, so this is by no means the last we will hear from Gaia, but the end of observations does close a significant chapter. Its legacy will be immense.
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Farewell to Gaia
Artist impression of ESA’s Gaia satellite observing the Milky Way. The background image of the sky is compiled from data from more than 1.8 billion stars. Spacecraft: ESA/ATG medialab; Milky Way: ESA/Gaia/DPAC. Acknowledgement: A. MoitinhoToday (15th January 2025) marks the end of an era. The European Space Agency’s Gaia spacecraft stops taking data today as it is running out of the gas propellant needed to keep it scanning the sky. The spacecraft was launched on 19 December 2013 so has been operating for just over 11 years.
For those of you not in the know, Gaia is a global space astrometry mission, whose mission was to make the largest, most precise three-dimensional map of our Galaxy by surveying more than a billion stars. Gaia was to monitor each of its target stars about 70 times over a five-year period. Alongside this core mission, it has also discovered hundreds of thousands of new celestial objects, such as extra-solar planets and brown dwarfs, and observed hundreds of thousands of asteroids within our own Solar System.
Gaia is creating an extraordinarily precise three-dimensional map of more than a thousand million stars throughout our Galaxy (The Milky Way) and beyond, mapping their motion, luminosity, temperature and chemical composition as well as any changes in such properties. This huge stellar census will provide the data needed to tackle an enormous range of important problems related to the origin, structure and evolutionary history of our Galaxy. Gaia does this by repeatedly measuring the positions of all objects down to an apparent magnitude of 20. A billion stars is about 1% of the entire stellar population of the Milky Way.
For the brighter objects, i.e. those brighter than magnitude 15, Gaia measures their positions to an accuracy of 24 microarcseconds, comparable to measuring the diameter of a human hair at a distance of 1000 km. Distances of relatively nearby stars are measured to an accuracy of 0.001%. Even stars near the Galactic Centre, some 30,000 light-years away, have their distances measured to within an accuracy of 20%.
The huge quantity of high-precision data Gaia has produced constitutes a tremendously influential resource for astronomical research. The fourth data release from Gaia, DR4, is in the pipeline for completion soon but the final data release (DR5) will take some years to appear, so this is by no means the last we will hear from Gaia, but the end of observations does close a significant chapter. Its legacy will be immense.