Please join us for a James Webb Space Telescope (JWST) webinar (JWebbinar) dedicated to the Optical Constants database (OCdb) and its use in PICASO and VIRGA models to analyze and […]
brown dwarf
Posted inExoplanets, -moons, -comets
The Accretionally Heated Atmospheres Of Protoplanets And Brown Dwarfs
[astro-ph.EP] The ranks of accreting planets and brown dwarfs are growing. To help interpret their spectra, we study how accretion affects a planet’s atmosphere. The atmosphere is irradiated from above […]
Posted inBrown Dwarfs
First Detection Of Variable Water Clouds Outside Of Our Solar System
[University Of Arizona]. A Jupiter-sized world just 7.5 light-years away is cloudy, chemically complex, and, it turns out, more like home than anyone expected.
Posted inBrown Dwarfs
SPHEREx Telescope Sees Menagerie Of Brown Dwarfs
[NASA] NASA’s SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization, and Ices Explorer) space telescope is shedding light on brown dwarfs, celestial objects that blur the line […]
![JWST/NIRSpec data for LRL 11001 using the PRISM disperser (bottom, L24) and G235M/G395M (top, this work). Uncertainties of ±1 σ for the latter are plotted as the pink band. The continuum near the 3.4 µm band has S/N∼30.-- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/09/JWST-detection.png?resize=1200%2C720&ssl=1)
Posted inBrown Dwarfs
JWST Detection Of Methane Emission From A Young Brown Dwarf
[astro-ph.EP] In recent studies, we have used low-resolution spectroscopy (R~100) with the James Webb Space Telescope (JWST) to uncover low-mass brown dwarfs (2-10 MJup) in the young cluster IC 348 […]
Posted inBrown Dwarfs
Water Cloud and Chemical Modulations in the Coldest Brown Dwarf
[astro-ph.EP] We present high signal-to-noise, medium resolution (R ~ 1000), time-series JWST/NIRSpec spectra of WISE 0855 (265K), the coldest known brown dwarf.
Posted inAstronomy & Telescopes
Webb Reveals A Stunning Panorama Of Star Formation
[ESA] This starry view of the nearby star-forming region IC 348 is one of the largest images from the NASA/ESA/CSA James Webb Space Telescope released to the public so far.
Posted inBrown Dwarfs
Decoding The Weather On Brown Dwarf SIMP 0136
[Trinity College Dublin] Scientists from Trinity College Dublin have developed a powerful way to unravel the changing weather patterns on distant worlds.
Posted inExoplanets, -moons, -comets
JWST Color Sequence Of Transiting Exoplanets And Directly Imaged Substellar Objects
[astro-ph.EP] Color-magnitude diagrams (CMDs) have been foundational across astrophysics, from galaxies and stars to brown dwarfs, and JWST now extends them to transiting exoplanets and self-luminous substellar objects at overlapping […]
![The top panel shows comparisons of the observed spectrum of JADES-GS-BD-11 (black with grey 1σ error bars) and the median retrieved spectrum for both the PH3 and non-PH3 petitRADTRANS (red and green, respectively, with 1σ central credible intervals shaded around the median). The bottom panel shows the difference between the retrieved and observed spectra, divided by the observed uncertainty. The two retrieved median spectra are generally within 1σ of each other everywhere except at 4.3 µm (the Q-branch of the PH3 feature).-- [astro-ph.SR]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/08/JWSTNIRSpec.png?resize=1200%2C717&ssl=1)
Posted inBrown Dwarfs
JWST/NIRSpec Spectra for Three Ultracool Brown Dwarfs Detected in Extragalactic Surveys: Further Evidence for Phosphine Absorption
[astro-ph.SR] We present JWST NIRSpec prism spectra for three ultracool brown dwarfs discovered in extragalactic survey data, two from the JWST Advanced Deep Extragalactic Survey (JADES), and one from Public […]