TY - JOUR
T1 - The 2MASS wide-field T dwarf search.
T2 - V. Discovery of a T dwarf via methane imaging
AU - Ellis, S. C.
AU - Tinney, C. G.
AU - Burgasser, Adam J.
AU - Kirkpatrick, J. Davy
AU - McElwain, Michael W.
PY - 2005/11/1
Y1 - 2005/11/1
N2 - We present the discovery of a T dwarf, 2MASS 2151-4853, via differential imaging through methane filters. The filters are designed to highlight the strong absorption in the H band due to methane found in the atmospheres of T dwarfs and provide a very efficient means of searching for them. Subsequent J- and H-band spectroscopy confirms 2MASS 2151-4853 as a T dwarf of type T4.5. It has an estimated spectrophotometric distance of 18 ± 3 pc and an estimated tangential velocity of v t = 50 ± 10 km s -1.
AB - We present the discovery of a T dwarf, 2MASS 2151-4853, via differential imaging through methane filters. The filters are designed to highlight the strong absorption in the H band due to methane found in the atmospheres of T dwarfs and provide a very efficient means of searching for them. Subsequent J- and H-band spectroscopy confirms 2MASS 2151-4853 as a T dwarf of type T4.5. It has an estimated spectrophotometric distance of 18 ± 3 pc and an estimated tangential velocity of v t = 50 ± 10 km s -1.
KW - Stars: individual (2MASS J21513839-4853542)
KW - Stars: low-mass, brown dwarfs
UR - http://www.scopus.com/inward/record.url?scp=28944448267&partnerID=8YFLogxK
U2 - 10.1086/491790
DO - 10.1086/491790
M3 - Article
AN - SCOPUS:28944448267
SN - 0004-6256
VL - 130
SP - 2347
EP - 2351
JO - Astronomical Journal
JF - Astronomical Journal
IS - 5
ER -