Results 11 to 20 of about 222,937 (306)

Infrared Classification of L and T Dwarfs

open access: green, 2001
6 pages, 3 figures, 1 table; to be published in the Proceedings of the 12th Cambridge Workshop on Cool Stars, Stellar Systems, and the ...
T. R. Geballe   +4 more
openalex   +4 more sources

The Spectra and Classification of L and T Dwarfs

open access: green, 2001
10 pages, 6 figures, To be published in Proceedings of the 12th Cambridge Workshop on Cool Stars, Stellar Systems, and the ...
Adam J. Burgasser
openalex   +4 more sources

Infrared Photometry of Late-M, L, and T Dwarfs [PDF]

open access: yesAstrophys.J. 564 (2002) 452, 2001
We present ZJHKL'M' photometry of a sample of 58 late-M, L, and T dwarfs, most of which are identified from the Sloan Digital Sky Survey and the Two Micron All-Sky Survey. Near-infrared spectra and spectral classifications for most of this sample are presented in a companion paper by Geballe et al.
Željko Ivezić   +20 more
arxiv   +6 more sources

Infrared Colors of L and T Dwarfs

open access: green, 2001
We discuss the behaviour of the JHKL'M' colors of L and T dwarfs, based on photometric and spectroscopic data obtained at the United Kingdom Infrared Telescope in Hawaii. We have measured the first accurate M' photometry for L and T dwarfs. The K-M' colors of T dwarfs are much bluer than predicted by published models, suggesting that CO may be more ...
S. K. Leggett   +4 more
openalex   +4 more sources

Infrared Spectroscopy of Brown Dwarfs: the onset of methane absorption in L dwarfs and the L/T transition

open access: green, 2001
We present infrared spectra of brown dwarfs with spectral types from mid-L to T. The 0.9-2.5 $ $m spectra of three dwarfs found by the Sloan Digital Sky Survey contain absorption bands of both methane and carbon monoxide and bridge the gap between late L and previously observed T dwarfs.
T. R. Geballe   +5 more
openalex   +4 more sources

Redder than Red: Discovery of an Exceptionally Red L/T Transition Dwarf

open access: yesThe Astrophysical Journal Letters, 2023
We present the discovery of CWISE J050626.96+073842.4 (CWISE J0506+0738), an L/T transition dwarf with extremely red near-infrared colors discovered through the Backyard Worlds: Planet 9 citizen science project. Photometry from UKIRT and CatWISE give a (
Adam C. Schneider   +26 more
doaj   +1 more source

Binaries and the L Dwarf/T Dwarf Transition [PDF]

open access: yesThe Astrophysical Journal, 2007
51 pages, 14 figures; accepted for publication in ...
Adam J. Burgasser, Adam J. Burgasser
openaire   +4 more sources

Astrometry and Photometry for ≈1000 L, T, and Y Dwarfs from the UKIRT Hemisphere Survey

open access: yesThe Astronomical Journal, 2023
We present the positions, proper motions, and near-infrared photometry for 966 known objects with spectral types later than M that were observed as part of the the UKIRT Hemisphere Survey (UHS).
Adam C. Schneider   +7 more
doaj   +1 more source

L dwarfs in the Hyades [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2008
We present the results of a proper motion survey of the Hyades to search for brown dwarfs, based on UKIDSS and 2MASS data. This survey covers ~275 square degrees to depth of K~15 mag, equivalent to a mass of 0.05 solar masses assuming a cluster age of 625 Myr. The discovery of 12 L dwarf Hyades members is reported.
S. L. Osbourne   +4 more
openaire   +4 more sources

An Investigation of New Brown Dwarf Spectral Binary Candidates From the Backyard Worlds: Planet 9 Citizen Science Initiative

open access: yesThe Astronomical Journal, 2023
We present three new brown dwarf spectral-binary candidates: CWISE J072708.09−360729.2, CWISE J103604.84−514424.4, and CWISE J134446.62−732053.9, discovered by citizen scientists through the Backyard Worlds: Planet 9 project.
Alexia Bravo   +11 more
doaj   +1 more source

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