Direct detection of the brown dwarf GJ 802B with adaptive optics masking interferometry

James P. Lloyd*, Frantz Martinache, Michael J. Ireland, John D. Monnier, Steven H. Pravdo, Stuart B. Shaklan, Peter G. Tuthill

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

52 Citations (Scopus)

Abstract

We have used the Palomar 200" adaptive optics (AO) system to directly detect the astrometric brown dwarf GJ 802B reported by Pravdo et al. This observation is achieved with a novel combination of aperture masking interferometry and AO. The dynamical masses are 0.175 ± 0.021 and 0.064 ± 0.032 M for the primary and secondary, respectively. The inferred absolute H-band magnitude of GJ 802B is MH = 12.8 resulting in a model-dependent Teff of 1850 ± 50 K and mass range of 0.057-0.074 M.

Original languageEnglish
Pages (from-to)L131-L134
Number of pages4
JournalAstrophysical Journal
Volume650
Issue number2
DOIs
Publication statusPublished - 20 Oct 2006
Externally publishedYes

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