Results 51 to 60 of about 79,172 (91)

Searching for Exosatellites Orbiting L and T Dwarfs: Connecting Planet Formation to Moon Formation and Finding New Temperate Worlds [PDF]

, 2019
L-type and T-type dwarfs span the boundaries between main-sequence stars, brown dwarfs, and planetary-mass objects. For these reasons, L and T dwarfs are the perfect laboratories for exploring the relationship between planet formation and moon formation,
Burgasser, Adam, Faherty, Jacqueline, Gagliuffi, Daniella Bardalez, Muirhead, Philip S., Radigan, Jacqueline, Skinner, Julie N., Stephens, Denise, Tamburo, Patrick, Theissen, Christopher, Triaud, Amaury   +9 more
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Dust in the Photospheric Environment II. Effect on the Near Infrared Spectra of L and T Dwarfs

, 2004
We report an attempt to interpret the spectra of L and T dwarfs with the use of the Unified Cloudy Model (UCM). For this purpose, we extend the grid of the UCMs to the cases of log g = 4.5 and 5.5.
Eriksson T. S., Kenshi Yanagisawa, Ordal M. A., Ossenkopf V., Tadashi Nakajima, Takashi Tsuji, Tsuji T., Tsuji T.   +7 more
core   +1 more source

Design considerations for a ground-based search for transiting planets around L and T dwarfs [PDF]

, 2019
We present design considerations for a ground-based survey for transiting exoplanets around L and T dwarfs, spectral classes that have yet to be thoroughly probed for planets.
Muirhead, Philip, Tamburo, Patrick
core   +3 more sources

Spectroscopic Detection of Carbon Monoxide in Two Late-type T Dwarfs

, 2008
M band spectra of two late-type T dwarfs, 2MASS J09373487+2931409, and Gliese 570D, confirm evidence from photometry that photospheric CO is present at abundance levels far in excess of those predicted from chemical equilibrium. These new and unambiguous
Bishop, Burgasser, Burgasser, Burgasser, Burgasser, Burgasser, Burrows, Cushing, D. A. Golimowski, D. Saumon, Fegley, Freedman, Geballe, Geballe, Golimowski, Griffith, Houck, Hubeny, K. S. Noll, Kirkpatrick, Knapp, Leggett, Leggett, Lodders, M. S. Marley, Moses, Noll, Noll, Oppenheimer, Patten, Perryman, S. K. Leggett, Saumon, Saumon, Saumon, Saumon, Saumon, Stephens, T. R. Geballe, Thorén, Valenti, Vrba, Zapatero Osorio   +42 more
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Dwarf Archives: A Compendium of M, L, and T Dwarf Data [PDF]

, 2009
Dwarf Archives is an online archive containing astrometric, photometric, and spectroscopic information for all known L and T dwarfs (over 650 objects), as well as a select sample of over 500 M dwarfs.
Adam J. Burgasser, Christopher R. Gelino, Eric Stempels, J. Davy Kirkpatrick   +3 more
core   +1 more source

A Chandra X-ray detection of the L dwarf binary Kelu-1: Simultaneous Chandra and Very Large Array observations

, 2007
Magnetic activity in ultracool dwarfs, as measured in X-rays and H$\alpha$, shows a steep decline after spectral type M7-M8. So far, no L dwarf has been detected in X-rays. In contrast, L dwarfs may have higher radio activity than M dwarfs.
Audard, M., Briggs, K. R., Brown, A., Gizis, J. E., Guedel, M., Hodges-Kluck, E., Osten, R. A.   +6 more
core   +2 more sources

A Search for L/T Transition Dwarfs With Pan-STARRS1 and WISE: Discovery of Seven Nearby Objects Including Two Candidate Spectroscopic Variables

, 2013
We present initial results from a wide-field (30,000 deg^2) search for L/T transition brown dwarfs within 25 pc using the Pan-STARRS1 and WISE surveys. Previous large-area searches have been incomplete for L/T transition dwarfs, because these objects are
Aller, Kimberly M., Best, William M. J., Burgett, W. S., Chambers, K. C., Deacon, Niall R., Dupuy, Trent J., Hodapp, K. W., Kaiser, N., Kudritzki, R. -P., Liu, Michael C., Magnier, Eugene A., Morgan, J. S., Price, P. A., Redstone, Joshua, Tonry, J. L., Wainscoat, R. J.   +15 more
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Dwarf Faunas [PDF]

The American Naturalist, 1908
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openaire   +2 more sources

The Evolution of L and T Dwarfs in Color-Magnitude Diagrams

, 2008
We present new evolution sequences for very low mass stars, brown dwarfs and giant planets and use them to explore a variety of influences on the evolution of these objects.
Chabrier G., D. Saumon, Mark S. Marley, Partridge H., Perryman M. A. C., Tsuji T.   +5 more
core   +1 more source

A new benchmark T8-9 brown dwarf and a couple of new mid-T dwarfs from the UKIDSS DR5+ LAS

, 2010
Benchmark brown dwarfs are those objects for which fiducial constraints are available, including effective temperature, parallax, age, metallicity. We searched for new cool brown dwarfs in 186 sq.deg.
Allard, Allen, Alonso, Artigau, B. Goldman, Baraffe, Bertin, Bessel, Beuzit, Burgasser, Burgasser, Burningham, Burningham, Burrows, Burrows, C. Clemens, Casali, Chiu, Cushing, Cutri, DeGennaro, Del Burgo, Delfosse, Delorme, Ducourant, Faherty, Goldman, Golimowski, Greiner, Greiner, Hambly, Hawley, Heintz, Helling, Helling, Henry, Hewett, Hodgkin, J. Greiner, Jameson, Kirkpatrick, Kirkpatrick, Lawrence, Leggett, Leggett, Leggett, Leggett, Liu, Lodieu, Lodieu, Looper, Luyten, McLean, Montes, Morales, Morel, Nakajima, Nidever, Perryman, Pinfield, Pinfield, Pojmanski, Robin, Ross, S. Marsat, Salim, Saumon, Schwope, Short, Smart, Stephens, Stephens, T. Henning, Tinney, Tinney, Tsuji, Van Leeuwen, Vrba, Warren, West, West, Zuckerman   +81 more
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