#browndwarfs — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #browndwarfs, aggregated by home.social.
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If we're calling Brown Dwarfs 'Failed Stars' and 'Substellar objects' then perhaps it makes more sense to call this Jupiter sized object a 'planet' rather than a 'moon'
There's every chance the Gas Giant has moons as well... -
Silicate Clouds, SiO, and Molecular Trends across the L-T Sequence - A JWST/MIRI LRS Spectral Library of #BrownDwarfs: https://arxiv.org/abs/2607.15521 -> thread https://bsky.app/profile/samilamby.bsky.social/post/3mr3y4xjabc2d
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RE: https://mastodon.social/@appassionato/116743249411055104
This is where Brown Dwarfs are made.
These are what comes between a world like Jupiter and a red dwarf star, the Universe is full of them. -
Three Thousand Motion-Confirmed L and T Dwarf Candidates from the Backyard Worlds - Planet 9 Citizen Science Project: https://arxiv.org/abs/2604.01323 -> NASA Volunteers Double Known Population of #BrownDwarfs: https://science.nasa.gov/get-involved/citizen-science/nasa-volunteers-double-known-population-of-brown-dwarfs/
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Two failed stars given a second chance. This is the first mass transfer process seen in a brown dwarf pairing ever discovered. Go, go, my brown little stars.
..., a team of scientists has discovered a tightly orbiting pair of brown dwarfs that are working together to combat this "failure." One brown dwarf is actively siphoning material from its companion, meaning it could achieve the mass needed to trigger nuclear fusion in its core and become a fully-fledged star. Either that, or these brown dwarfs will collide and merge, birthing an entirely new star with enough mass to trigger nuclear fusion.
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Spitzer + HST parallaxes of 13 late T and Y dwarfs: https://arxiv.org/abs/2603.08984 -> "We present astrometric measurements for 13 cold #BrownDwarfs in the solar neighborhood (d < 20pc). By combining archival Spitzer data with our own Hubble Space Telescope (HST) observations, we achieve parallax uncertainties typically around 10%. Using Spitzer and HST photometry we compare our targets with other known late T and Y dwarfs in the Solar neighborhood, confirming that there is large intrinsic scatter in the near- and mid-infrared absolute magnitudes and colors of this population, further highlighting the diversity observed spectroscopically by several James Webb Space Telescope (JWST) programs."
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🌌 Some cosmic objects exist at the threshold. Too massive for planetary peace, too small for stellar fire, they drift through ages in slow surrender to darkness.
✍️ Discover these failed stars between worlds 🔭: https://TPC8.short.gy/OdqADo74
✨ Where physics draws boundaries, nature paints twilight
#BrownDwarfs #Astrophysics #CosmicThresholds #Physics #StellarEvolution #Astronomy #Space #TPC8
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The JWST Weather Report - retrieving temperature variations, auroral heating, and static cloud coverage on SIMP-0136: https://arxiv.org/abs/2507.07772 -> Brauner Zwerg - Polarlichter auf einem kuriosen Himmelskörper: https://www.tagesspiegel.de/wissen/james-webb-weltraumteleskop-brauner-zwerg-polarlichter-auf-einem-kuriosen-himmelskorper-14408018.html #BrownDwarfs
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NASA Study: Celestial ‘Accident’ Sheds Light on Jupiter, Saturn Riddle https://www.nasa.gov/missions/webb/nasa-study-celestial-accident-sheds-light-on-jupiter-saturn-riddle/ #NASA #JamesWebbSpaceTelescopeJWST #BrownDwarfs #Exoplanets #TheSearchForLife
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#TachyonBeam #astronomy #stars #RedDwarfs #BrownDwarfs
An article published in the journal "Monthly Notices of the Royal Astronomical Society" (MNRAS) reports the discovery of a rare hierarchical quadruple system, which was cataloged as UPM J1040−3551 AabBab. A team of researchers used various observations to identify this quartet consisting of a pair of red dwarfs and a pair of brown dwarfs.
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Benchmark #BrownDwarfs – a blue M2 + T5 wide binary and a probable young [M4 + M4] + [T7 + T8] hierarchical quadruple: https://academic.oup.com/mnras/article/542/2/656/8155088?login=false -> Rare quadruple star system could unlock mystery of brown dwarfs: https://ras.ac.uk/news-and-press/research-highlights/rare-quadruple-star-system-could-unlock-mystery-brown-dwarfs
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A New Spectral Class of #BrownDwarfs at the Bottom of the IMF in IC 348: https://iopscience.iop.org/article/10.3847/2041-8213/addc55 -> interview with both authors: https://www.youtube.com/watch?v=2lz3Kewi6GI
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3 Years of Science: 10 Cosmic Surprises from NASA’s Webb Telescope https://science.nasa.gov/missions/webb/3-years-of-science-10-cosmic-surprises-from-nasas-webb-telescope/ #NASA #Astrophysics #BlackHoles #BrownDwarfs #ExoplanetScience #Exoplanets #Galaxies #GalaxiesStarsBlackHoles #GoddardSpaceFlightCenter #JamesWebbSpaceTelescopeJWST #Nebulae #ScienceResearch
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Discovery Alert: A Possible Perpendicular Planet https://science.nasa.gov/universe/exoplanets/discovery-alert-a-possible-perpendicular-planet/ #NASA #Astrophysics #BinaryStars #BrownDwarfs #Exoplanets #ScienceResearch #TheUniverse
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Flame Nebula: Hubble and Webb Observations (Compass Image) ✨
#BrownDwarfs #StarFormingRegions
⏩ 3 new pictures from Webb (NASA) https://commons.wikimedia.org/wiki/Special:ListFiles?limit=5&user=OptimusPrimeBot&ilshowall=1&offset=20250311043446
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NASA’s Webb Peers Deeper into Mysterious Flame Nebula https://science.nasa.gov/missions/webb/nasas-webb-peers-deeper-into-mysterious-flame-nebula/ #NASA #Astrophysics #BrownDwarfs #GoddardSpaceFlightCenter #JamesWebbSpaceTelescopeJWST #ScienceResearch #StarFormingNebulae #TheUniverse
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An Introduction to Brown Dwarfs by John Gizis, 2024
From very-low-mass stars to super-Jupiters
This book provides an introduction to brown dwarfs aimed at advanced undergraduates and beginning graduate students, supplementing stellar astrophysics or (exo)planetary science classes. It emphasizes the key theoretical ideas and the main observational results that support those ideas.
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NASA’s Webb Exposes Complex Atmosphere of Starless Super-Jupiter https://science.nasa.gov/missions/webb/nasas-webb-exposes-complex-atmosphere-of-starless-super-jupiter/ #NASA #Astrophysics #BrownDwarfs #Exoplanets #GoddardSpaceFlightCenter #JamesWebbSpaceTelescopeJWST #ScienceResearch #TheUniverse
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#astronomy #BrownDwarfs #NGC602 #JWST
An article published in "The Astrophysical Journal" reports the identification of 64 brown dwarf candidates in the star cluster NGC 602 in the Small Magellanic Cloud, one of the Milky Way's satellite galaxies. A team of researchers used the James Webb Space Telescope to obtain the sensitivity and resolution needed to detect possible objects halfway between the planet and the star about 200,000 light-years away.
https://english.tachyonbeam.com/2024/10/24/first-candidate-brown-dwarfs-discovered-outside-the-milky-way/ -
#astronomy #stars #BrownDwarfs #Gliese229B
Two articles, one published in the journal "Nature" and one in "The Astrophysical Journal Letters", report the results of two independent studies on Gliese 229 B, the first brown dwarf whose existence was confirmed, which conclude that it's actually a pair of close brown dwarfs.
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I suspect that just as there are many stellar doubles out there, so it goes with brown dwarfs
https://phys.org/news/2024-10-twins-mystery-famed-brown-dwarf.html
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The JWST weather report from the nearest #BrownDwarfs - multiperiod JWST NIRSpec + MIRI monitoring of the benchmark binary brown dwarf WISE 1049AB: https://academic.oup.com/mnras/article/532/2/2207/7712857?login=false -> Scorching storms on distant worlds revealed in new detail: https://ras.ac.uk/news-and-press/news/scorching-storms-distant-worlds-revealed-new-detail
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Stellar surprise – astronomers uncover methane emission on a cold brown dwarf for the first time
📷 This artist concept portrays the brown dwarf W1935. The team speculates that the methane emission may be due to processes generating aurorae, shown here in red. Credit: NASA, ESA, CSA, Leah Hustak (Space Telescope Science Institute).
#discovery #aurora #JWST #aurorae #browndwarfs #W1935 #glowing #methane #astronomy #astrophysics #astrodon #space #science #research #STEM
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A Solar Neighborhood Census, Thanks to NASA Citizen Science https://science.nasa.gov/get-involved/citizen-science/a-solar-neighborhood-census-thanks-to-nasa-citizen-science/ #NASA #AstrophysicsDivision #BrownDwarfs #CitizenScience #NEOWISE #Stars #TheUniverse #WISEWideFieldInfraredSurveyExplorer
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Hubble Brown Dwarf Survey Illustration ✨
#BinaryStars #BrownDwarfs #Stars
▶️ 1 new picture from Hubble (NASA) https://commons.wikimedia.org/wiki/File:Hubble_Brown_Dwarf_Survey_Illustration_%282024-005%29.tiff
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An HST survey of 33 T8 to Y1 brown dwarfs - NIR photometry and multiplicity of the coldest isolated objects: https://stsci-opo.org/STScI-01HRABPNJMAE3XS5P2RAV1A3RP.pdf -> NASA's Hubble Finds that Aging #BrownDwarfs Grow Lonely: https://hubblesite.org/contents/news-releases/2024/news-2024-005
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NASA’s Hubble Finds that Aging Brown Dwarfs Grow Lonely https://science.nasa.gov/missions/hubble/nasas-hubble-finds-that-aging-brown-dwarfs-grow-lonely/ #NASA #BrownDwarfs #GoddardSpaceFlightCenter #HubbleSpaceTelescope #Missions #TheUniverse
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Atmospheric Methane of Brown Dwarfs W1935 and W2220 (NIRSpec) ✨
#BrownDwarfs #PlanetaryAtmospheres/Weather
⏩ 2 new pictures from Webb (NASA) https://commons.wikimedia.org/wiki/Special:ListFiles?limit=4&user=OptimusPrimeBot&ilshowall=1&offset=20240110103705
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NASA’s Webb Finds Signs of Possible Aurorae on Isolated Brown Dwarf https://www.nasa.gov/missions/webb/nasas-webb-finds-signs-of-possible-aurorae-on-isolated-brown-dwarf/ #NASA #JamesWebbSpaceTelescopeJWST #Auroras #BrownDwarfs #GoddardSpaceFlightCenter #Heliophysics #ScienceResearch #Stars #TheUniverse
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Brown Dwarfs (BDs): James Webb Telescope Identifies Smallest Object formed in a Star-like manner
Stars have a life cycle spanning a few million to trillions of years. They are born, undergo changes with the passage of time and finally meet their...........
#Browndwarfs #JamesWebbTelescope #JWST #star #starformation
Umesh Prasad