Awesome new paper on galaxy evolution for the #astrosci crowd!
Should’ve posted yesterday! In a paper titled “Searching Within Galaxies for the Earliest Signs of Quenching With Spatially Resolved Star Formation Histories in UVCANDELS” we divided star-forming galaxies into bits to see how star formation changed depending on location over the last billion years.
November 6, 2025 at 12:12 PM
Awesome new paper on galaxy evolution for the #astrosci crowd!
A little sneak peak from the MEAD survey of white dwarfs within 25 pc using MIRI 10 and 15 micron imaging filters. Visit 101 of the survey captured images of EGGR 199, which is just 16pc away. No planets down to 3 Mjup found nearby the white dwarf! (1/2) #astrosci 🔭
November 7, 2025 at 5:25 PM
A little sneak peak from the MEAD survey of white dwarfs within 25 pc using MIRI 10 and 15 micron imaging filters. Visit 101 of the survey captured images of EGGR 199, which is just 16pc away. No planets down to 3 Mjup found nearby the white dwarf! (1/2) #astrosci 🔭
A little over 23 years ago, I wrote my first paper on white dwarf planetary systems and not only am I fortunate enough to still be able to go looking for them with JWST, that little paper (which almost got rejected) hit 400 citations #astrosci #exoplanets
November 4, 2025 at 7:48 PM
A little over 23 years ago, I wrote my first paper on white dwarf planetary systems and not only am I fortunate enough to still be able to go looking for them with JWST, that little paper (which almost got rejected) hit 400 citations #astrosci #exoplanets
Huge congratulations to @manishacaleb.bsky.social for her successful ARC Discovery Project on
"Tracing the origins of Long Period Transients in the Milky Way"
and to @benjaminpope.bsky.social for his project on
"Where are all the Exo-Earths?"
Two exciting #AstroSci projects starting in 2026!
"Tracing the origins of Long Period Transients in the Milky Way"
and to @benjaminpope.bsky.social for his project on
"Where are all the Exo-Earths?"
Two exciting #AstroSci projects starting in 2026!
October 28, 2025 at 1:53 AM
Huge congratulations to @manishacaleb.bsky.social for her successful ARC Discovery Project on
"Tracing the origins of Long Period Transients in the Milky Way"
and to @benjaminpope.bsky.social for his project on
"Where are all the Exo-Earths?"
Two exciting #AstroSci projects starting in 2026!
"Tracing the origins of Long Period Transients in the Milky Way"
and to @benjaminpope.bsky.social for his project on
"Where are all the Exo-Earths?"
Two exciting #AstroSci projects starting in 2026!
You probably missed it because of some deadline but on Tuesday we published the results of an [OIII] emitters search in the COMOS(-3D) field using slitlless spectroscopy. That's *237* 6.7<z<9 uniformly-selected spec-z galaxies over 0.3 degrees square. See the piled 2D plots below, that's a lot!
October 17, 2025 at 2:41 PM
If you're a research astronomer, then the AstroSci subfeed (& other topical feeds) are a great place to share & discuss research, conferences, jobs, and more:
October 16, 2025 at 7:56 PM
If you're a research astronomer, then the AstroSci subfeed (& other topical feeds) are a great place to share & discuss research, conferences, jobs, and more:
In Cycle 2, I was co-PI of the largest volume limited survey of nearby white dwarfs with #JWST. Our first result is out! Out of 56 white dwarfs, one showed a possible candidate companion between projected separations of 0.5"-2" or roughly 10-40 au. 🔭 #astrosci
ui.adsabs.harvard.edu/abs/2025arXi...
ui.adsabs.harvard.edu/abs/2025arXi...
The MIRI Excesses around Degenerates (MEAD) Survey I: A candidate cold brown dwarf in orbit around the nearby white dwarf 2MASS J09424023-4637176
The MIRI Excesses Around Degenerates Survey is a Cycle 2 James Webb Space Telescope (JWST) Survey program designed to image nearby white dwarfs in the mid-IR with the MIRI imaging mode. Only a handful...
ui.adsabs.harvard.edu
October 15, 2025 at 11:45 AM
In Cycle 2, I was co-PI of the largest volume limited survey of nearby white dwarfs with #JWST. Our first result is out! Out of 56 white dwarfs, one showed a possible candidate companion between projected separations of 0.5"-2" or roughly 10-40 au. 🔭 #astrosci
ui.adsabs.harvard.edu/abs/2025arXi...
ui.adsabs.harvard.edu/abs/2025arXi...
Gibson et al. “TESS Discovers a Second System of Transiting Exocomets in the Extreme
Debris Disk of RZ Psc” showing 24 exocomet transits and the existence of a broken power law for the sizes of these exocomets, unlike Beta Pic’s exocomet distribution #exoplanet #astrodon #astrosci
Debris Disk of RZ Psc” showing 24 exocomet transits and the existence of a broken power law for the sizes of these exocomets, unlike Beta Pic’s exocomet distribution #exoplanet #astrodon #astrosci
October 14, 2025 at 4:11 AM
Gibson et al. “TESS Discovers a Second System of Transiting Exocomets in the Extreme
Debris Disk of RZ Psc” showing 24 exocomet transits and the existence of a broken power law for the sizes of these exocomets, unlike Beta Pic’s exocomet distribution #exoplanet #astrodon #astrosci
Debris Disk of RZ Psc” showing 24 exocomet transits and the existence of a broken power law for the sizes of these exocomets, unlike Beta Pic’s exocomet distribution #exoplanet #astrodon #astrosci
Today on arXiv, an asteroseismic analysis of the Methuselah star !
#astrosci
arxiv.org/abs/2510.11532
#astrosci
arxiv.org/abs/2510.11532
October 14, 2025 at 7:22 AM
Today on arXiv, an asteroseismic analysis of the Methuselah star !
#astrosci
arxiv.org/abs/2510.11532
#astrosci
arxiv.org/abs/2510.11532
#SciX has some cute new vizualisations that you can use with your existing #ADS private libraries - like this author network plot.
#RadioAstronomy #AstroSci
#RadioAstronomy #AstroSci
October 3, 2025 at 8:18 PM
#SciX has some cute new vizualisations that you can use with your existing #ADS private libraries - like this author network plot.
#RadioAstronomy #AstroSci
#RadioAstronomy #AstroSci
One of my faves, among the galaxies that we're studying. Uncommonly beautiful because of its striking "flocculent" spiral morphology. We've learned its star clusters tell a story of gas accreted from a neighbor, rejuvenating the disk🧪🔭
iopscience.iop.org/article/10.3...
#extragalactic #astrosci
iopscience.iop.org/article/10.3...
#extragalactic #astrosci
Spiral, elliptical or neither? 🤔
The latest image from the NASA/ESA Hubble Space Telescope features a hard-to-categorise galaxy, NGC 2775. It has features of both elliptical and spiral galaxies – so what type is it?
Read more 👉 esahubble.org/images/potw2... 🔭
The latest image from the NASA/ESA Hubble Space Telescope features a hard-to-categorise galaxy, NGC 2775. It has features of both elliptical and spiral galaxies – so what type is it?
Read more 👉 esahubble.org/images/potw2... 🔭
September 24, 2025 at 1:34 PM
One of my faves, among the galaxies that we're studying. Uncommonly beautiful because of its striking "flocculent" spiral morphology. We've learned its star clusters tell a story of gas accreted from a neighbor, rejuvenating the disk🧪🔭
iopscience.iop.org/article/10.3...
#extragalactic #astrosci
iopscience.iop.org/article/10.3...
#extragalactic #astrosci
Nice result by Farhad Yusef-Zadeh et al. Although "surprising" is a strong word, given that we have known most of this (flares vs. quiescent state, flares every few hours, orbiting hotspot) for about 20 years.
🧪🔭 #astrosci
🧪🔭 #astrosci
NASA's James Webb Space Telescope on Flickr (Feb 18, 2025)
Webb reveals a surprising light show from Sagittarius A*, our galaxy's supermassive black hole, with 5-6 major flares daily and ongoing fluctuations in its accretion disk.
flic.kr/p/2qMqR3N
Webb reveals a surprising light show from Sagittarius A*, our galaxy's supermassive black hole, with 5-6 major flares daily and ongoing fluctuations in its accretion disk.
flic.kr/p/2qMqR3N
September 21, 2025 at 12:45 AM
Nice result by Farhad Yusef-Zadeh et al. Although "surprising" is a strong word, given that we have known most of this (flares vs. quiescent state, flares every few hours, orbiting hotspot) for about 20 years.
🧪🔭 #astrosci
🧪🔭 #astrosci
These maps are utterly amazing, the author wrote up detailed descriptions and design choices in the GitHub repos - really detailed and brilliant work! #astrosci
This is also amazing and she open sourced the method
The Geology of the Moon
A map of basins, lava flows, valleys, and impact craters on the Earth's Moon.
tabletopwhale.com
September 12, 2025 at 3:49 AM
These maps are utterly amazing, the author wrote up detailed descriptions and design choices in the GitHub repos - really detailed and brilliant work! #astrosci
My periodic reminder for #astrosci #astrodon #exoplanets Early Career Researchers to please, please, please have a simple web site with your current email address on it - rationale here: kenworthy.space/advice/
September 12, 2025 at 4:22 AM
My periodic reminder for #astrosci #astrodon #exoplanets Early Career Researchers to please, please, please have a simple web site with your current email address on it - rationale here: kenworthy.space/advice/
Some sad #exoplanets news in a paper led by me: “YSES 2b is a background star”. A distant M dwarf star some 2 kiloparsecs behind the star just so happens to have a non-zero proper motion in EXACTLY the wrong direction: this required multiple GRAVITY observations to solve… #astrosci #astrodon
September 12, 2025 at 7:05 AM
Some sad #exoplanets news in a paper led by me: “YSES 2b is a background star”. A distant M dwarf star some 2 kiloparsecs behind the star just so happens to have a non-zero proper motion in EXACTLY the wrong direction: this required multiple GRAVITY observations to solve… #astrosci #astrodon
#astrosci ☄️
Very cool paper by Jess Speedie et al. on the AB Aur disk and its spirals on the arxiv today: arxiv.org/abs/2503.01957
The authors show how infalling streamers can explain the data, and linking them very nicely to a ring of SO emission and potential gravitation instability in the disk. 🔭🪐
The authors show how infalling streamers can explain the data, and linking them very nicely to a ring of SO emission and potential gravitation instability in the disk. 🔭🪐
Mapping the merging zone of late infall in the AB Aur planet-forming system
Late infall events challenge the traditional view that planet formation occurs without external influence. Here we present deep ALMA $^{12}$CO $J=2-1$ and SO $J_{N}=5_6-4_5$ observations toward AB Aur...
arxiv.org
March 5, 2025 at 2:30 PM
#astrosci ☄️
Crazy ideas that might work with Roman where you need less contrast (and thus can maybe do it for fainter stars)
High contrast binaries (Sirius b systems, M dwarfs , Betelgeuse B like systems)
AGN surroundings, jets
#astrosci 🔭
High contrast binaries (Sirius b systems, M dwarfs , Betelgeuse B like systems)
AGN surroundings, jets
#astrosci 🔭
July 31, 2025 at 6:31 PM
Crazy ideas that might work with Roman where you need less contrast (and thus can maybe do it for fainter stars)
High contrast binaries (Sirius b systems, M dwarfs , Betelgeuse B like systems)
AGN surroundings, jets
#astrosci 🔭
High contrast binaries (Sirius b systems, M dwarfs , Betelgeuse B like systems)
AGN surroundings, jets
#astrosci 🔭
A polite golf clap to Suárez Mascareño with “In space there will be no need to scream
Limits to the presence of giant planets in the ζ² Ret system” allowing us to all breathe a sigh of relief that Weyland Yutani will not be endangering the Earth any time soon… 👽 #astrosci #astrodon
Limits to the presence of giant planets in the ζ² Ret system” allowing us to all breathe a sigh of relief that Weyland Yutani will not be endangering the Earth any time soon… 👽 #astrosci #astrodon
October 31, 2025 at 10:28 AM
A polite golf clap to Suárez Mascareño with “In space there will be no need to scream
Limits to the presence of giant planets in the ζ² Ret system” allowing us to all breathe a sigh of relief that Weyland Yutani will not be endangering the Earth any time soon… 👽 #astrosci #astrodon
Limits to the presence of giant planets in the ζ² Ret system” allowing us to all breathe a sigh of relief that Weyland Yutani will not be endangering the Earth any time soon… 👽 #astrosci #astrodon
☄️#astrosci
Paper day! I introduce a new all-in-one tool to generate and drizzle/resample space-based point spread functions for more accurate photometry 🔭🧪
arxiv.org/abs/2503.02288
arxiv.org/abs/2503.02288
spike: A tool to drizzle HST, JWST, and Roman PSFs for improved analyses
Point spread functions (PSFs) describe the distribution of light for a pure point source in an astronomical image due to the instrument optics. For deconvolution, as for point source photometry and fo...
arxiv.org
March 5, 2025 at 5:19 AM
☄️#astrosci
So today I am very happy to share this paper on our entire dataset with VLT/MUSE on 2I/Borisov. Deam, @astrokiwi.bsky.social, Opitom, Knight et al., submitted to PSJ (28 pp)
A portrait throughout perihelion of the NH$_2$-rich interstellar comet 2I/Borisov
The interstellar comet 2I/Borisov is the first interstellar object where compositional characterisation was possible throughout its entire perihelion passage. We report all 16 epochs of a comprehensiv...
arxiv.org
July 8, 2025 at 11:02 AM
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FAQ: The AstroSci Feed - The Astrosky Ecosystem
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July 16, 2025 at 9:45 AM
Welcome to the AstroSci feed! Contains posts about astronomy and planetary science research.
• You need to sign up• Then, add ☄️ or #astrosci to your post.
for your posts to appear here.
• Check out our other feeds!
See the FAQ for more info:
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So, for anyone getting Avi Loeb’s emails, or wondering if his claims have any merit this time around: all of his alien spacecraft stuff for this object rest on his assertion that it is very large and has no detected coma.
This is incorrect. It is clearly, clearly a comet.
This is incorrect. It is clearly, clearly a comet.
It has coma. No large telescope has seen anything but coma. Paper after paper on the arXiv with this
July 17, 2025 at 3:27 PM
The cascade of kinetic and magnetic energy from large to small scales in galactic-style turbulence behaves significantly different to the theoretical models that we regularly assume work.
www.nature.com/articles/s41...
Published in @natastron.nature.com
www.nature.com/articles/s41...
Published in @natastron.nature.com
May 13, 2025 at 3:53 PM