Results 51 to 60 of about 12,278,686 (380)
CLOUDLESS ATMOSPHERES FOR L/T DWARFS AND EXTRASOLAR GIANT PLANETS [PDF]
, 2016 The admitted, conventional scenario to explain the complex spectral evolution of brown dwarfs (BDs) since their first detection 20 years ago has always been the key role played by micron-size condensates, called “dust” or “clouds,” in their atmosphere ...
P. Tremblin +7 more
semanticscholar +1 more source
A Study of the Diverse T Dwarf Population Revealed by WISE [PDF]
, 2012 We report the discovery of 87 new T dwarfs uncovered with the Wide-field Infrared Survey Explorer (WISE) and three brown dwarfs with extremely red near-infrared colors that exhibit characteristics of both L and T dwarfs.
Bailey, Vanessa +25 more
core +1 more source
A SURVEY FOR Hα EMISSION FROM LATE L DWARFS AND T DWARFS [PDF]
, 2016 Recently, studies of brown dwarfs have demonstrated that they possess strong magnetic fields and have the potential to produce radio and optical auroral emissions powered by magnetospheric currents.
J. Pineda +5 more
semanticscholar +1 more source
The Classification of T Dwarfs [PDF]
, 2001 15 pages, 6 figures, conference proceedings for IAU Ultracool Dwarf Stars session, ed. I.
Burgasser, A. J. +2 more
openaire +5 more sources
A Statistical Survey of Peculiar L and T Dwarfs in SDSS, 2MASS, and WISE [PDF]
, 2017 We present the final results from a targeted search for brown dwarfs with unusual near-infrared colors. From a positional cross-match of the Sloan Digital Sky Survey (SDSS), 2-Micron All-Sky Survey (2MASS), and Wide-Field Infrared Survey Explorer (WISE ...
K. Kellogg +3 more
semanticscholar +1 more source
Parallaxes of Southern Extremely Cool objects III: 118 L and T dwarfs [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We present new results from the Parallaxes of Southern Extremely Cool dwarfs program to measure parallaxes, proper motions and multiepoch photometry of L and early T dwarfs.
R. Smart +20 more
semanticscholar +1 more source
Uniform Atmospheric Retrieval Analysis of Ultracool Dwarfs. II. Properties of 11 T dwarfs [PDF]
, 2016 Brown dwarf spectra are rich in information revealing of the chemical and physical processes operating in their atmospheres. We apply a recently developed atmospheric retrieval tool to an ensemble of late-T dwarf (600–800 K) near-infrared (1–2.5 μm ...
M. Line +9 more
semanticscholar +1 more source
TRIGONOMETRIC PARALLAXES AND PROPER MOTIONS OF 134 SOUTHERN LATE M, L, AND T DWARFS FROM THE CARNEGIE ASTROMETRIC PLANET SEARCH PROGRAM [PDF]
, 2016 We report trigonometric parallaxes for 134 low-mass stars and brown dwarfs, of which 38 have no previously published measurement and 79 more have improved uncertainties. Our survey focused on nearby targets, so 119 are closer than 30 pc.
A. Weinberger +5 more
semanticscholar +1 more source
The Astrophysical Journal, 2023 The James Webb Space Telescope (JWST) is now observing Y dwarfs, the coldest known brown dwarfs, with effective temperatures T _eff ≲ 475 K. The first published observations provide important information: not only is the atmospheric chemistry out of ...
S. K. Leggett, Pascal Tremblin
doaj +1 more source
Dwarfs and Dwarf Worship [PDF]
Nature, 1892 IN the slow course of post in this Protectorate I have just received copies of the Times of September 3 containing Mr. R. G. Halliburton's paper on “Dwarf Races and Dwarf Worship,” and of September 14 and 22, containing subsequent correspondence on the same subject.
openaire +3 more sources