The 2MASS Wide-Field T Dwarf Search. V. Discovery of a T Dwarf via Methane Imaging

November 2005 • 2005AJ....130.2347E

Authors • Ellis, S. C. • Tinney, C. G. • Burgasser, Adam J. • Kirkpatrick, J. Davy • McElwain, Michael W.

Abstract • 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.

Links

• PREPRINT http://arxiv.org/abs/astro-ph/0508149
• ELECTR https://doi.org/10.1086%2F491790
• SIMBAD http://simbad.u-strasbg.fr/simbo.pl?bibcode=2005AJ....130.2347E
• PDF https://stacks.iop.org/1538-3881/130/2347/pdf
• DATA https://irsa.ipac.caltech.edu/bibdata/2005/E/2005AJ....130.2347E.html
• SPIRES http://inspirehep.net/search?p=find+eprint+astro-ph/0508149