Results 21 to 30 of about 48,990 (297)

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, Beichman, Charles A., Bloom, Joshua S., Burgasser, Adam J., Cushing, Michael C., Eisenhardt, Peter R., Fortney, Jonathan J., Gelino, Christopher R., Griffith, Roger L., Hinz, Philip M., Kirkpatrick, J. Davy, Knox, Russell P., Lowrance, Patrick J., Mace, Gregory N., Marley, Mark S., Marsh, Kenneth A., McLean, Ian S., Mix, Katholeen, Morley, Caroline V., Rodigas, Timothy J., Saumon, Didier, Sheppard, Scott S., Skrutskie, Michael F., Stock, Nathan D., Thompson, Maggie A., Wright, Edward L.   +25 more
core   +1 more source

Brown Dwarfs

, 1998
After a discussion of the physical processes in brown dwarfs, we present a complete, precise definition of brown dwarfs and of planets inspired by the internal physics of objects between 0.1 and 0.001 M_sun. We discuss observational techniques for characterizing low-luminosity objects as brown dwarfs, including the use of the lithium test and cooling ...
Oppenheimer, Ben R., Kulkarni, S. R., Stauffer, John R.   +2 more
openaire   +2 more sources

Four Brown Dwarfs in the Taurus Star-Forming Region [PDF]

, 2001
We have identified four brown dwarfs in the Taurus star-forming region. They were first selected from $R$ and $I$ CCD photometry of 2.29 square degrees obtained at the Canada-France-Hawaii Telescope.
A. Magazzù, Bouvier J., C. Dougados, Cederblad S., Comeron F., E. L. Martín, E. Magnier, F. Ménard, J.-C. Cuillandre, Leinert Ch., X. Delfosse   +10 more
core   +2 more sources

Three New Cool Brown Dwarfs Discovered with the Wide-field Infrared Survey Explorer (WISE) and an Improved Spectrum of the Y0 Dwarf WISE J041022.71+150248.4 [PDF]

, 2014
As part of a larger search of Wide-field Infrared Survey Explorer (WISE) data for cool brown dwarfs with effective temperatures less than 1000 K, we present the discovery of three new cool brown dwarfs with spectral types later than T7.
Cushing, Michael C., Gelino, Christopher R., Gould, Andrew, Kirkpatrick, J. Davy, Mace, Gregory N., Skrutskie, Michael F.   +5 more
core   +3 more sources

SMA and CARMA observations of young brown dwarfs in ρ Ophiuchi and Taurus

EPJ Web of Conferences, 2011
Molecular outflows provide vital information about the earliest stages in the birth of stars, studying the molecular outflow properties is therefore crucial for understanding how stars form.
Lee C.-F., Ngoc P.-B., Ho P.
doaj   +1 more source

Low Luminosity Companions to White Dwarfs [PDF]

, 2005
This paper presents results of a near-infrared imaging survey for low mass stellar and substellar companions to white dwarfs. A wide field proper motion survey of 261 white dwarfs was capable of directly detecting companions at orbital separations ...
Alexander J., B. Zuckerman, Bouvier J., Duquennoy A., E. E. Becklin, Eggen O., Heber U., Hog E., Homeier D., J. Farihi, Livio M., Low C., Marsh M., Marsh T., Marsh T., Maxted P., Perryman M., Weidemann V., Weidemann V., Weidemann V., Wielen R.   +20 more
core   +4 more sources

Interactions between brown-dwarf binaries and Sun-like stars

, 2012
Several mechanisms have been proposed for the formation of brown dwarfs, but there is as yet no consensus as to which -- if any -- are operative in nature. Any theory of brown dwarf formation must explain the observed statistics of brown dwarfs.
A. Natta, A. P. Whitworth, A. Toomre, A.J. Burgasser, A.J. Burgasser, A.J. Maury, A.P. Whitworth, A.P. Whitworth, A.P. Whitworth, B. Reipurth, C. McCarthy, C.F. Gammie, C.R. Gelino, D. Stamatellos, D. Stamatellos, D. Stamatellos, D. Stamatellos, D. Stamatellos, E. Moraux, E.T. Whelan, F. Comerón, H. Bouy, I. Thies, I. Thies, I.N. Reid, J. Sahlmann, J.K. Faherty, J.K. Faherty, K. Todorov, K.L. Luhman, K.L. Luhman, K.L. Luhman, L.M. Close, M. Ahmic, M. Kaplan, M.R. Bate, M.R. Bate, M.R. Bate, N. Lodieu, P. Girichidis, P. Hennebelle, P. Hennebelle, P. Padoan, R. Rebolo, S. Mohanty, S.K. Walch, S.P. Goodwin, S.P. Goodwin, S.S. Kumar, S.S.R. Offner, S.S.R. Offner, T. Nakajima   +51 more
core   +1 more source

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, P. Tremblin, C. Alves de Oliveira, S. M. Birkmann, I. Baraffe, G. Chabrier, E. Manjavacas, R. J. Parker, J. Valenti   +8 more
doaj   +1 more source

Substellar Companions to Main Sequence Stars: No Brown Dwarf Desert at Wide Separations

, 2001
We use three field L and T dwarfs which were discovered to be wide companions to known stars by the Two Micron All-Sky Survey (2MASS) to derive a preliminary brown dwarf companion frequency.
Adam Burgasser, Bouvier J., David G. Monet, Duquennoy A., Goldman B., Halbwachs J. L., I. Neill Reid, J. Davy Kirkpatrick, James Liebert, John C. Wilson, John E. Gizis   +10 more
core   +2 more sources

Predicting the Detection Yields of Giant Planets and Brown Dwarfs with CSST Astrometry

The Astronomical Journal
Chinese 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, Fabo Feng, Zhensen Fu, Shilong Liao, Zhaoxiang Qi, Yang Chen   +5 more
doaj   +1 more source