The 2MASS wide-field T dwarf search. V. Discovery of a T dwarf via methane imaging

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)2347-2351
Number of pages5
JournalAstronomical Journal
Volume130
Issue number5
DOIs
Publication statusPublished - 1 Nov 2005
Externally publishedYes

Keywords

  • Stars: individual (2MASS J21513839-4853542)
  • Stars: low-mass, brown dwarfs

Fingerprint Dive into the research topics of 'The 2MASS wide-field T dwarf search. V. Discovery of a T dwarf via methane imaging'. Together they form a unique fingerprint.

Cite this