Characterizing brown dwarf companions with IRDIS long-slit spectroscopy: HD 1160 B and HD 19467 B
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa1444
Abstract: The determination of the fundamental properties (mass, separation, age, gravity and atmospheric properties) of brown dwarf companions allows us to infer crucial informations on their formation and evolution mechanisms. Spectroscopy of substellar companions is available… read more here.
Keywords: characterizing brown; long slit; dwarf companions; 1160 19467 ... See more keywords
WD1032 + 011, an inflated brown dwarf in an old eclipsing binary with a white dwarf
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa1608
Abstract: We present the discovery of only the third brown dwarf known to eclipse a non-accreting white dwarf. Gaia parallax information and multi-colour photometry confirm that the white dwarf is cool (9950$\pm$150K) and has a low… read more here.
Keywords: 011 inflated; wd1032 011; white dwarf; dwarf ... See more keywords
TOI-2119: A transiting brown dwarf orbiting an active M-dwarf from NASA’s TESS mission
Sign Up to like & getrecommendations! Published in 2022 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stac1666
Abstract: We report the discovery of TOI-2119b, a transiting brown dwarf (BD) that orbits and is completely eclipsed by an active M-dwarf star. Using light curve data from the Transiting Exoplanet Survey Satellite mission and follow-up… read more here.
Keywords: dwarf; brown dwarf; toi 2119; active dwarf ... See more keywords
TOI-2490b – the most eccentric brown dwarf transiting in the brown dwarf desert
Sign Up to like & getrecommendations! Published in 2024 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stae1940
Abstract: We report the discovery of the most eccentric transiting brown dwarf in the brown dwarf desert, TOI-2490b. The brown dwarf desert is the lack of brown dwarfs around main-sequence stars within $\sim 3$ au and… read more here.
Keywords: toi 2490b; dwarf; transiting brown; dwarf desert ... See more keywords
The only inflated brown dwarf in an eclipsing white dwarf–brown dwarf binary: WD1032+011B
Sign Up to like & getrecommendations! Published in 2024 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stae2121
Abstract: Due to their short orbital periods and relatively high flux ratios, irradiated brown dwarfs in binaries with white dwarfs offer better opportunities to study irradiated atmospheres than hot Jupiters, which have lower planet-to-star flux ratios.… read more here.
Keywords: wd1032 011b; dwarf; white dwarf; dwarf brown ... See more keywords
HD 28185 Revisited: An outer planet, instead of a brown dwarf, on a saturn-like orbit
Sign Up to like & getrecommendations! Published in 2024 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stae2336
Abstract: As exoplanet surveys reach ever-higher sensitivities and durations, planets analogous to the solar system giant planets are increasingly within reach. HD 28185 is a Sun-like star known to host a msin i = 6 MJ planet on… read more here.
Keywords: like orbit; planet; saturn like; orbit ... See more keywords
The First Spin-Orbit Obliquity of an M dwarf/brown dwarf System: An eccentric and aligned TOI-2119 b
Sign Up to like & getrecommendations! Published in 2024 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stae2819
Abstract: We report the first instance of an M dwarf/brown dwarf obliquity measurement for the TOI-2119 system using the Rossiter-McLaughlin effect. TOI-2119 b is a transiting brown dwarf orbiting a young, active early M dwarf (Teff… read more here.
Keywords: obliquity; system; toi; toi 2119 ... See more keywords
PHL 5038AB: Is the brown dwarf causing pollution of its white dwarf host star?
Sign Up to like & getrecommendations! Published in 2024 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stae974
Abstract: We present new results on PHL 5038AB, a widely separated binary system composed of a white dwarf and a brown dwarf, refining the white and brown dwarf parameters and determining the binary separation to be $66^{+12}_{-24}$ AU.… read more here.
Keywords: system; pollution white; phl 5038ab; dwarf ... See more keywords
WASP-128b: a transiting brown dwarf in the dynamical-tide regime
Sign Up to like & getrecommendations! Published in 2018 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/sty2512
Abstract: Massive companions in close orbits around G dwarfs are thought to undergo rapid orbital decay due to runaway tidal dissipation. We report here the discovery of WASP-128b, a brown dwarf discovered by the WASP survey… read more here.
Keywords: transiting brown; 128b transiting; wasp 128b; mathrm ... See more keywords
A measurement of the wind speed on a brown dwarf
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DOI: 10.1126/science.aaz2856
Abstract: High winds in an extrasolar atmosphere Brown dwarfs are objects intermediate in mass between large planets and small stars, and their atmospheres share many characteristics with gas giant planets. Wind speeds in Solar System gas… read more here.
Keywords: wind speed; radio; brown dwarf;
Observation of undepleted phosphine in the atmosphere of a low-temperature brown dwarf.
Sign Up to like & getrecommendations! Published in 2025 at "Science"
DOI: 10.1126/science.adu0401
Abstract: The atmospheres of low-temperature brown dwarfs and gas giant planets are expected to contain the phosphine molecule, PH3. However, previous observations have shown much lower abundances of this molecule than predicted by atmospheric chemistry models.… read more here.
Keywords: chemistry; phosphine; temperature brown; phosphine atmosphere ... See more keywords