Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21943908c&link_type=abstract
American Astronomical Society, AAS Meeting #219, #439.08
Astronomy and Astrophysics
Astronomy
Scientific paper
By comparing the Wide-field Infrared Survey Explorer (WISE) preliminary data release to the Two Micron All Sky Survey (2MASS) in search of high proper motion objects (≥0.3" yr-1), we find over 200 dwarfs, most being M dwarfs, and a few interesting L dwarfs. Among these, WISEP J060738.65+242953.4 (W0607+2429) is the third closest L dwarf at 7.8+1.4-1.2 pc, and WISEP J180026.60+013453.1 (W1800+0134) is the seventh closest L dwarf at 8.8±1.0 pc, these two late L dwarfs near the L/T transition double the number of late L dwarfs within 10 pc from two to four. WISEP J004701.06+680352.1 (W0047+6803) is one of the reddest known field L dwarfs with J-Ks = 2.55±0.08, a prime target for the study of extremely dusty substellar atmospheres. These close L dwarfs provide an opportunity for further study to resolve outstanding issues regarding condensate clouds of low temperature atmospheres near the L/T transition as well as provide insight into the unusually red L dwarf class. This research is supported by the Annie Jump Cannon Fund at the University of Delaware.
Castro Philip
Gizis John E.
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