Results 21 to 30 of about 1,466 (265)
Searching for Planets of Brown Dwarfs [PDF]
Symposium - International Astronomical Union, 2003 Up to now, most planet search projects have concentrated on G and K stars. In order to considerably widen the view, we have stated a survey for planets of old, nearby brown dwarfs and very low-mass stars. Using UVES, we have observed 26 brown dwarfs and very low-mass stars.
Guenther, E., Wuchterl, G.
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Brown Dwarf Companions to White Dwarfs [PDF]
AIP Conference Proceedings, 2011 Brown dwarf companions to white dwarfs are rare, but recent infra-red surveys are slowly reveal- ing examples. We present new observations of the post-common envelope binary WD0137-349, which reveals the effects of irradiation on the ~ 0.05M* secondary, and new observations of GD 1400 which show that it too is a close, post-comon envelope system.
Matt R. Burleigh +13 more
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Searching for weather in brown dwarfs [PDF]
Monthly Notices of the Royal Astronomical Society, 1999 8 pages, 7 figures. To appear in the Monthly Notices of the RAS.
Tinney, C. G., Tolley, A. J.
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Unraveling the brown dwarf desert: Four new discoveries and a unifying period-coded picture
Astronomy & AstrophysicsWe present four newly validated transiting brown dwarfs identified through TESS photometry and confirmed with high-precision radial velocity measurements obtained from the FEROS and PLATOSpec spectrographs.
Šubjak Ján +32 more
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A measurement of the wind speed on a brown dwarf [PDF]
Science, 2020 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 giant atmospheres can be derived by comparing the planet's rotational periods in the infrared (tracing
Katelyn. N. Allers +3 more
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Predicting the Detection Yields of Giant Planets and Brown Dwarfs with CSST Astrometry
The Astronomical JournalChinese Space Station Telescope (CSST), which will begin its scientific operations around 2027, is going to survey the sky area of the median-to-high Galactic latitude and median-to-high ecliptic latitude.
Yifan Xuan +5 more
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The Anatomical Record, EarlyView.Abstract Analysis of the variation in the bony structures of the inner and middle ear provides critical insights into functional morphology, as well as adaptive morphology across primates. In this study, we investigated whether ear morphology patterns are related to the ecological characteristics of species and their habitats to test two acoustic ...
Myriam Marsot +4 more
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Rethinking brachycephaly: Anatomical implications and health considerations in lagomorphs
The Anatomical Record, EarlyView.Abstract Brachycephaly in domestic rabbits is increasingly perceived by welfare organizations as associated with significant health complications, particularly oral pathologies. Despite this perception, comparative anatomical research into rabbit brachycephaly is limited compared to that of dogs and cats, compelling an in‐depth examination of its ...
Helaina Cressy +3 more
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Gray Spectral Variability in Three Brown Dwarfs Observed by HST/WFC3 Time-series Observations
The Astrophysical JournalThe L/T transition is a critical evolutionary stage for brown dwarfs and self-luminous giant planets. L/T transition brown dwarfs are more likely to be spectroscopically variable, and their high-amplitude variability probes distributions in their clouds ...
Madalyn F. Chapleski, Yifan Zhou
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JWST/NIRSpec Observations of the Coldest Known Brown Dwarf
The Astronomical Journal, 2023 We present 1–5 μ m spectroscopy of the coldest known brown dwarf, WISE J085510.83−071442.5 (WISE 0855), performed with the Near-Infrared Spectrograph (NIRSpec) on board the James Webb Space Telescope (JWST).
K. L. Luhman +8 more
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