keflavich.bsky.social @keflavich.bsky.social · 09/10/2026@melina-iras07572.bsky.social have you been noting these tails in other regions? You had an RNAAS a few years back on similar objects. 110
keflavich.bsky.social @keflavich.bsky.social · 17/09/2026starformation.astro.ufl.edu/jwst-gc/slow... is a nice screensaver-style view. WARNING: as of today, there are some "double star" bugs - I'm fixing them but you may need to reload. (also I can't guarantee the server can handle everyone...)starformation.astro.ufl.eduJWST Galactic Center — slow panner 010
keflavich.bsky.social @keflavich.bsky.social · 17/09/2026Sometimes, JWST acquires the wrong guide star, then we end up with problems like this one. These are the sorts of glitches the JWST-GC team (sites.google.com/view/jwst-gc..., github.com/JWST-GC/data...) are fixing. They are only minor, temporary problems. 100
keflavich.bsky.social @keflavich.bsky.social · 17/09/2026Sometimes, JWST fails to acquire a guide star - this is particularly problematic in the Galactic center, where JWST's fine guidance sensor (FGS) instrument is sensitive to stars we have not cataloged because no other telescopes has seen them. Holes in the mosaic (until next year) are the result 010
keflavich.bsky.social @keflavich.bsky.social · 17/09/2026we're providing close-to-live updates on the data processing here: sites.google.com/view/jwst-gc...sites.google.comJWST-GC - DataDATA ARE LIVE! View them here: https://starformation.astro.ufl.edu/avm_images/jwst_gc_aladin.html https://starformation.astro.ufl.edu/jwst-gc/slow_panner.html (these images are being updated live - ... 210
keflavich.bsky.social @keflavich.bsky.social · 17/09/2026JWST-GC program update: we have MIRI coverage of ~half of the field that NIRCAM covers. We use MIRI in 'coordinated parallel' mode, which means we get MIRI data _almost_ for free when we take NIRCAM images. We can make 3-color images for those few regions 263
Reposted by @keflavich.bsky.socialMelina Thévenot🏳️⚧️ @melina-iras07572.bsky.social · 17/09/2026Proper Motion of stars in the galactic center with #JWST NIRCam F182M. programs: 1306, 4515 www.stsci.edu/jwst-program... 412343
keflavich.bsky.social @keflavich.bsky.social · 15/09/2026The JWST-GC Treasury Program page is here: sites.google.com/view/jwst-gc/ check out the data page and links therein 020
Reposted by @keflavich.bsky.socialMelina Thévenot🏳️⚧️ @melina-iras07572.bsky.social · 14/09/2026I think this is part of Sagittarius B1. Position: 266.7678606 -28.5559221 #JWST NIRCam (F212N, F480M) same program: www.stsci.edu/jwst-program... 16411
keflavich.bsky.social @keflavich.bsky.social · 13/09/2026The JWST-GC Treasury team will be making mosaics of these; stay tuned! 010
Reposted by @keflavich.bsky.socialIsrael Velazquez @israelvelazquez.bsky.social · 08/09/2026Part of W51A | NIRCAM #JWST Proposal ID: 6151 (www.stsci.edu/jwst-program...) PI: Yoo, Taehwa. Observed: 2025-05-06. Released: 2026-05-07 Title: The determination of the upper initial mass function in the nearest massive star-forming region, W51A. 2299
keflavich.bsky.social @keflavich.bsky.social · 07/09/2026Observations for the JWST Galactic Center Legacy Program (id 10678) are scheduled to start within a week. These will immediately become public, but they are going to be a massive mosaic - 140 observations. We'll be processing those data; stay tuned at starformation.astro.ufl.edu/jwst-gc/moni...starformation.astro.ufl.eduJWST-GC pipeline monitor 031
Reposted by @keflavich.bsky.socialAstrobot JWST @astrobotjwst.bsky.social · 02/09/2026🤖 image processing for #JWST 🔭 data (SGRB2_MIRI). RGB Filters: 2550, 1280, 770 PI: Ginsburg, Adam G, program 05365. CRVAL: 266.833293, -28.422298 Credits: NASA, ESA, CSA, STScI. 2235
Reposted by @keflavich.bsky.socialIsrael Velazquez @israelvelazquez.bsky.social · 03/09/2026SGRB2_MIRI | #JWST Proposal ID: 5365 (www.stsci.edu/jwst-program...) PI: Ginsburg, Adam G. Observed: 2025-09-02. Filters: F770W F1280W F2550W Title: Identifying, counting, and mapping YSOs in Sgr B2: our Galaxys most massive molecular cloud 1199
Reposted by @keflavich.bsky.socialLandru79 @landru79.bsky.social · 03/09/2026James #Webb Space Telescope #JWST Identifying, counting, and mapping YSOs in #Sgr B2: our Galaxys most massive molecular cloud TARG: #SGRB2 Observed: 2025-09-02 PI: Ginsburg, Adam G. MIRI 2550 1280 770 yuval-harpaz.github.io/astro/jwst_l... NASA/ESA/CSA/STScI/j. Roger 34012
Reposted by @keflavich.bsky.socialThomas Carpentier @thocarp.bsky.social · 04/09/2026Today was a great day for me on professional and personal levels, so I will share something even greater: a JWST observation of the centre of our galaxy! 🔭 This is Sagittarius B2, a molecular cloud a few hundreds light years away from SgrA*, as seen by MIRI and processed by me! 44913
keflavich.bsky.social @keflavich.bsky.social · 07/09/2026I love your take on it. See also: science.nasa.gov/asset/webb/s... and the first paper on it ui.adsabs.harvard.edu/abs/2026AJ.....science.nasa.govSagittarius B2 (MIRI Image) - NASA ScienceWebb’s MIRI instrument shows the Sagittarius B2 region in mid-infrared light, with warm dust glowing brightly. Only the brightest stars emit strongly enough to appear through the dense clouds as blue ... 132
keflavich.bsky.social @keflavich.bsky.social · 16/08/2026The JWST Galactic Center legacy program starts observing next week: www.stsci.edu/jwst-program.... We'll be publishing advanced data products (combined images) as soon as they're ready.stsci.eduJWST 10678 Program Information 000
Reposted by @keflavich.bsky.socialCheryl Blanchard @cheribliss.bsky.social · 30/03/2026🔭🧪JWST Program 6151, T. Yoo (PI) - The determination of the upper initial mass function in the nearest massive star-forming region, W51A: www.stsci.edu/jwst-program... data: W51A-NIRCAM, observed: 2025-05-06 W51, released 2025-09-08, NASA, ESA, CSA NIRCam 480, 360, 150-162 & MIRI 1280, 1000, 770 13011
Reposted by @keflavich.bsky.socialYuval Harpaz 𝚿👨🎓 📊🌌🔭 @yuvharpaz.bsky.social · 30/03/2026Here is my version, NIRCam data for this star forming region W51 2166
Reposted by @keflavich.bsky.socialMelina Thévenot🏳️⚧️ @melina-iras07572.bsky.social · 30/03/2026You can explore the offical images by Adam Ginsburg, Taehwa Yoo and A. Pagan here: starformation.astro.ufl.edu/Aladin_tours... and read the press release here: news.ufl.edu/2026/03/jwst...starformation.astro.ufl.eduW51 Wavelength Explorer 041
Reposted by @keflavich.bsky.socialMelina Thévenot🏳️⚧️ @melina-iras07572.bsky.social · 30/03/2026W51A with #JWST NIRCam (F140M, F182M, F210M) NIRCam data was shared with us by co-PI Adam Ginsburg #astronomy #nebula 🔭🧪 commons.wikimedia.org/wiki/File:W5... 23112
Reposted by @keflavich.bsky.socialYuval Harpaz 𝚿👨🎓 📊🌌🔭 @yuvharpaz.bsky.social · 30/03/2026A new #JWST image was just published Credits to Prof. A. Ginsburg and his team NASA, ESA, CSA 🔭 news.ufl.edu/2026/03/jwst...news.ufl.eduResearchers use James Webb Telescope to reveal hidden details of W51 star formationStars in the W51 region are very young and massive, and using the telescope gave the team the ability to view the early stages of star formation. 13612
Reposted by @keflavich.bsky.socialCheryl Blanchard @cheribliss.bsky.social · 11/09/2025Westerhout 51A ~17,000 ly distant in constellation Sagittarius 🔭 JWST Program 6151 - The determination of the upper initial mass function in the nearest massive star-forming region, W51A: www.stsci.edu/jwst-program... data:W51A, released: 2025-09-08 NASA, ESA, CSA/ #JWST MIRI 1280, 1000, 770 1324
Reposted by @keflavich.bsky.socialarXiv astro-ph.GA Astrophysics of Galaxies @astrophga-bot.bsky.social · 03/03/2025arXiv:2502.20506v1 Announce Type: new Abstract: This study examines the mid-infrared properties of Giant HII (GHII) regions in the Milky Way's Central Molecular Zone (CMZ) -- Sgr B1, Sgr B2, and Sgr C -- using SOFIA-FORCAST [1/8 of arxiv.org/abs/2502.20506v1] 121
Reposted by @keflavich.bsky.socialアストロピクス 宇宙画像情報サイト @astropics.bsky.social · 29/09/2025天の川銀河中心の近くにある分子雲「いて座B2」を、ジェイムズ・ウェッブ宇宙望遠鏡がとらえた画像。銀河中心の超巨大ブラックホール「いて座A*」から数百光年のところにあるいて座B2は、その領域の10％のガスしかありませんが、領域全体の50％の星が生まれています。 astropics.bookbright.co.jp/sgr-b2-jwst 141
Reposted by @keflavich.bsky.socialLandru79 @landru79.bsky.social · 10/09/2025James #Webb Space Telescope #JWST Identifying, counting, and mapping YSOs in Sgr B2: our Galaxy most massive molecular cloud TARG: #SGRB2 2024-09-07 PI: Ginsburg, Adam G NIRCAM 444-466 405-444 480 410 360 300 212 210 187 182 150w mast.stsci.edu/portal/Mashu... NASA/ESA/CSA/STScI/j. Roger 1154
Reposted by @keflavich.bsky.socialLandru79 @landru79.bsky.social · 16/09/2025James #Webb Space Telescope #JWST Identifying, counting, and mapping YSOs in Sgr B2: our Galaxy's most massive molecular cloud TARG: #SGRB2_MIRI 2024-09-15 PI: Ginsburg, Adam G MIRI f2550w f1280w f770w mast.stsci.edu/portal/Mashu... NASA/ESA/CSA/STScI/j. Roger 0104
Reposted by @keflavich.bsky.socialCheryl Blanchard @cheribliss.bsky.social · 16/09/2025🔭 JWST Program 5365 - Identifying, counting, and mapping YSOs in Sgr B2: our Galaxy's most massive molecular cloud: www.stsci.edu/jwst-program... data: SGRB2_MIRI, released: 2025-09-16 NASA, ESA, CSA/ #JWST MIRI 2550, 1280, 770 0221
Reposted by @keflavich.bsky.socialCheryl Blanchard @cheribliss.bsky.social · 24/09/2025Wonderful MIRI imaging of Sgr B2 by Alyssa Pagan. This inspires my confidence in boldly processing the brilliant colors of JWST's MIRI instrument. 1111
Reposted by @keflavich.bsky.socialNASA Webb Telescope @nasawebb.extwitter.link · 24/09/2025In contrast, in the near-infrared, it’s the colorful stars that steal the show in Sgr B2. Astronomers will seek to learn more about their masses and ages, to better learn about how stars are formed in this dense, active region of the galactic center. 2774
Reposted by @keflavich.bsky.socialNASA Webb Telescope @nasawebb.extwitter.link · 24/09/2025Webb's Mid-Infrared Instrument captured glowing cosmic dust heated by very young massive stars in unprecedented detail in Sgr B2. Note that while the dust and gas glow dramatically, all the bright stars disappear from view. 2727
Reposted by @keflavich.bsky.socialRaimo Kangasniemi @rk70534.bsky.social · 28/09/2025"The NASA/ESA/CSA James Webb Space Telescope has revealed a colourful array of massive stars and glowing cosmic dust in the Sagittarius B2 (Sgr B2) molecular cloud, the most massive and active star-forming region in our Milky Way galaxy." www.esa.int/Science_Expl...esa.intWebb explores largest star-forming cloud in our galaxyThe NASA/ESA/CSA James Webb Space Telescope has revealed a colourful array of massive stars and glowing cosmic dust in the Sagittarius B2 (Sgr B2) molecular cloud, the most massive and active star-for... 183
Reposted by @keflavich.bsky.socialLandru79 @landru79.bsky.social · 17/10/2025James #Webb Space Telescope #JWST Identifying, counting, and mapping YSOs in Sgr B2: our Galaxy's most massive molecular cloud TARG: #SGRB2_MIRI 2024-09-15 2025-09-02 PI: Ginsburg, Adam G MIRI 2xf2550w f1280w f770w mast.stsci.edu/portal/Mashu... NASA/ESA/CSA/STScI/j. Roger Special thanks to PI 2238
Reposted by @keflavich.bsky.socialCheryl Blanchard @cheribliss.bsky.social · 17/10/2025🔭 JWST Program 5365 - Identifying, counting, and mapping YSOs in Sgr B2: our Galaxy's most massive molecular cloud: www.stsci.edu/jwst-program... data: SGRB2_MIRI, released: 2025-09-16 & 10-06 NASA, ESA, CSA, STSci/ #JWST MIRI 2550, 1280, 770 0306
Reposted by @keflavich.bsky.socialMelina Thévenot🏳️⚧️ @melina-iras07572.bsky.social · 17/10/2025Sagittarius B2 with #JWST MIRI 🔭 Missing data (left part of the image) was published early by PI Adam Ginsburg and @cheribliss.bsky.social shared it with me (thanks 👍) program: www.stsci.edu/jwst-program... 1334
Reposted by @keflavich.bsky.socialarXiv astro-ph.SR Solar and Stellar Astrophysics @astrophsr-bot.bsky.social · 24/07/2025Theo Richardson, Adam Ginsburg, Erik Rosolowsky, Joshua Peltonen, R\'emy Indebetouw: A framework for modeling the evolution of young stellar objects arxiv.org/abs/2507.16944 arxiv.org/pdf/2507.16944 arxiv.org/html/2507.16944 002
keflavich.bsky.social @keflavich.bsky.social · 04/10/2025As we chatted about by e-mail: yes! More data exist. They were acquired a year later because of a technical issue with guide stars during the first attempt last year. 030
Reposted by @keflavich.bsky.socialaaccomazzi.bsky.social @aaccomazzi.bsky.social · 11/02/2025We are experiencing technical problems which are part of some growing pains (more content, more users, same infrastructure). At the moment there are no funding or programmatic threats to ADS. Thank you for your patience while we sort things out. 35610
Reposted by @keflavich.bsky.socialAlyssa Goodman @alyssagoodman.bsky.social · 04/12/2023Want to see right into the "brick" at the center of our Galaxy using @NASAWebb? Check out the newest @CosmicDataStory creation, explaining the discovery by University of Florida Prof. Adam Ginsburg et al. t.co/qQEPgbsvL5. cosmicds.github.io/minids/jwst-...t.coJWST BrickJWST Brick 131
keflavich.bsky.social @keflavich.bsky.social · 04/12/2023Press release on JWST observations of The Brick to go with our paper published today news.clas.ufl.edu/the-brick-mi... Check out the associated WWT visualization too: cosmicds.github.io/minids/jwst-...news.clas.ufl.eduUF Astronomers Illuminate Dark Region of Milky Way - NewsAstronomer Adam Ginsburg uses the James Webb Space Telescope to gaze into an unusual dark molecular cloud at the heart of the Milky Way. 030
