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#photometry — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #photometry, aggregated by home.social.

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  1. Weekly Update from the Open Journal of Astrophysics 20/06/2026

    It’s Saturday again so it’s time for another update of activity at the Open Journal of Astrophysics. Since the last update we have published a further three papers, bringing the number in Volume 9 (2026) to 126 and the total so far published by OJAp up to 574.

    I will continue to include the posts made on our Mastodon account (on Fediscience); these announcements also show the DOI for each paper.

    The first paper to report this week, published on Monday 15th June, is “SN 2025adpq: A Type Ia supernova in a collisional ring formed during a major galaxy merger” by Brendan O’Connor (Carnegie Mellon University, USA) and 18 others based in the USA, Germany and Australia. The study reports the discovery of a Type Ia supernova, SN 2025adpq, within a collisional ring formed by a major galaxy merger., offset from the nucleus of the primary galaxy. It is published in the folder Astrophysics of Galaxies.

    The overlay for this paper is here

    You can find the officially accepted version on arXiv here and the announcement on Fediverse here:

    https://fediscience.org/@OJ_Astro/116753183446523072

    The second paper for this week, published on Tuesday June 16th in the folder Astrophysics of Galaxies is “The Colors of Ices: Measuring ice column density through photometry” by Adam Ginsburg (U. Florida, USA) and ten others based in the USA, Germany and Spain. This study demonstrates that JWST photometry can identify and quantify interstellar ices, using new open-source models, interstellar ices, finding significant abundance in non-star-forming gas, suggesting many avenues for further research.

    The overlay looks like this:

    The official version of the paper can be found on arXiv here and the Fediverse announcement here:

    https://fediscience.org/@OJ_Astro/116758595971333611

    The third paper of the week, published on Wednesday 17th June in the folder Cosmology and Nongalactic Astrophysics is “The Non-Gaussian Weak-Lensing Likelihood: A Multivariate Copula Construction and Impact on Cosmological Constraints” by Veronika Oehl and Tilman Tröster (both of ETH Zurich, Switzerland). This study presents a framework for computing non-Gaussian likelihoods for correlation functions, particularly useful in large-scale weak-lensing surveys. It suggests Gaussian likelihoods are sufficient for stage-IV surveys.

    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/116764509657843733

    The fourth and final paper of the week, also ublished on Wednesday 17th June but in the folder Astrophysics of Galaxies, is “Black Hole Feedback, Galaxy Quenching and Outflows at Cosmic Dawn: Analysis of the SEEDZ Simulations” by Lewis R. Prole (Maynooth University, Ireland) and 15 others based in Ireland, Germany, USA and UK. The study analyzes the growth and feedback effects of massive black holes in SEEDZ simulations, suggesting that black hole feedback, not nearby supernovae or gas exhaustion, limits initial growth.

    The overlay is here:

    The final, accepted version can be found on arXiv here and the Mastodon announcement is here:

    https://fediscience.org/@OJ_Astro/116764428903842241

    And that concludes this week’s update. It has been a slow week on the publishing front, but the main reason is that we have a big backlog of papers accepted but waiting for the authors to put their final versions on arXiv and we can’t do anything about that! I’ll do another update next Saturday.

    #arXiv251000292v5 #arXiv260209104v2 #arXiv260315899v2 #arXiv260407336v2 #AstrophysicsOfGalaxies #blackHoles #collisionalRings #Copula #CosmicDawn #cosmologicalSurveys #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #DiamondOpenAccessPublishing #galaxyMergers #Ice #InterstellarMedium #JWST #nonGaussianity #OpenAccess #OpenAccessPublishing #photometry #SEEDZSimulations #SN2025adpq #spectroscopy #Type1aSupernovae #weakGravitationalLensing
  2. Weekly Update from the Open Journal of Astrophysics 20/06/2026

    It’s Saturday again so it’s time for another update of activity at the Open Journal of Astrophysics. Since the last update we have published a further four papers, bringing the number in Volume 9 (2026) to 126 and the total so far published by OJAp up to 574.

    I will continue to include the posts made on our Mastodon account (on Fediscience); these announcements also show the DOI for each paper.

    The first paper to report this week, published on Monday 15th June, is “SN 2025adpq: A Type Ia supernova in a collisional ring formed during a major galaxy merger” by Brendan O’Connor (Carnegie Mellon University, USA) and 18 others based in the USA, Germany and Australia. The study reports the discovery of a Type Ia supernova, SN 2025adpq, within a collisional ring formed by a major galaxy merger., offset from the nucleus of the primary galaxy. It is published in the folder Astrophysics of Galaxies.

    The overlay for this paper is here

    You can find the officially accepted version on arXiv here and the announcement on Fediverse here:

    https://fediscience.org/@OJ_Astro/116753183446523072

    The second paper for this week, published on Tuesday June 16th in the folder Astrophysics of Galaxies is “The Colors of Ices: Measuring ice column density through photometry” by Adam Ginsburg (U. Florida, USA) and ten others based in the USA, Germany and Spain. This study demonstrates that JWST photometry can identify and quantify interstellar ices, using new open-source models, interstellar ices, finding significant abundance in non-star-forming gas, suggesting many avenues for further research.

    The overlay looks like this:

    The official version of the paper can be found on arXiv here and the Fediverse announcement here:

    https://fediscience.org/@OJ_Astro/116758595971333611

    The third paper of the week, published on Wednesday 17th June in the folder Cosmology and Nongalactic Astrophysics is “The Non-Gaussian Weak-Lensing Likelihood: A Multivariate Copula Construction and Impact on Cosmological Constraints” by Veronika Oehl and Tilman Tröster (both of ETH Zurich, Switzerland). This study presents a framework for computing non-Gaussian likelihoods for correlation functions, particularly useful in large-scale weak-lensing surveys. It suggests Gaussian likelihoods are sufficient for stage-IV surveys.

    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/116764509657843733

    The fourth and final paper of the week, also ublished on Wednesday 17th June but in the folder Astrophysics of Galaxies, is “Black Hole Feedback, Galaxy Quenching and Outflows at Cosmic Dawn: Analysis of the SEEDZ Simulations” by Lewis R. Prole (Maynooth University, Ireland) and 15 others based in Ireland, Germany, USA and UK. The study analyzes the growth and feedback effects of massive black holes in SEEDZ simulations, suggesting that black hole feedback, not nearby supernovae or gas exhaustion, limits initial growth.

    The overlay is here:

    The final, accepted version can be found on arXiv here and the Mastodon announcement is here:

    https://fediscience.org/@OJ_Astro/116764428903842241

    And that concludes this week’s update. It has been another slow week on the publishing front, but the main reason is that we have a big backlog of papers accepted – about 10 of them – but still waiting for the authors to put their final versions on arXiv and we can’t do anything about that! I’ll do another update next Saturday.

    #arXiv251000292v5 #arXiv260209104v2 #arXiv260315899v2 #arXiv260407336v2 #AstrophysicsOfGalaxies #blackHoles #collisionalRings #Copula #CosmicDawn #cosmologicalSurveys #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #DiamondOpenAccessPublishing #galaxyMergers #Ice #InterstellarMedium #JWST #nonGaussianity #OpenAccess #OpenAccessPublishing #photometry #SEEDZSimulations #SN2025adpq #spectroscopy #Type1aSupernovae #weakGravitationalLensing
  3. One of my college projects had me performing photometry for the open star cluster IC1311. This is a series of long exposure shots compiled in false colors for viewing pleasure.
    #astronomy #photometry #opencluster

  4. Characterising the stellar differential #rotation based on largest-spot statistics from ground-based #photometry.

    We model the statistics of the dominating #spots of two young and active Solar-type stars, V889 Her and LQ Hya, in order to obtain information on the underlying spot distribution, rotation of the #star, as well as the orientation of the stellar axis of spin.

    #astronomy #astrophysics
    arxiv.org/abs/2410.06076

  5. [#ScienceNews IRAP] Thanks to state-of-the-art instrumentation combining various high-resolution #spectroscopy and multi-wavelength #photometry techniques, @cnrs researchers including Claire Moutou from @IRAP have discovered the youngest hot #Jupiter-type planet - only two million years old, still in its formation phase.

    Details+ : irap.omp.eu/en/2024/03/discove

  6. Hi Everyone.

    At the beginning of the year I received notice I've got my first funding as a new PI. It's for an ambitious project to look at how the main olfactory system in mice enables individualized social interactions. I wanted to hire a postdoc before, but now I really really want to hire a postdoc. If you know anyone who is at the right stage and might think the picture attached to this post looks cool, please can you share? There's a lot more to it than what's in the diagrams here.

    The job ad is in several places including here:
    sparksociety.org/resource-blog

    #neurojobs #neuroscience #imaging #miniscope #olfaction #olfactory #photometry #electrophysiology #neuropixels

  7. C14 #Automatic Imaging Telescope #Photometry of GJ1214: arxiv.org/abs/2302.07874 - an (advanced) #amateur telescope was used to provide context for #JWST observations of the highest signal-to-noise #subNeptune.

  8. A third #planet transiting the star TOI-1260, previously known to host two transiting sub-Neptune planets.

    The nature of the third transiting planet is supported by ground-based follow-up observations, including time-series #photometry, high-angular resolution images, #spectroscopy, and archival imagery.

    The radius estimates allow a precise interpretation of the interior structure of the three planets.

    #astronomy #exoplanets
    arxiv.org/abs/2212.04307

  9. You want to work with the @[email protected] #nearinfrared #photometry data, and you want to know the exact shape of the NIR #passbands of the @[email protected] instrument?

    Then here you go, now with an immutable doi and paper reference: doi.org/10.5270/esa-kx8w57c