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 language | English |
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Pages (from-to) | L131-L134 |
Number of pages | 4 |
Journal | Astrophysical Journal |
Volume | 650 |
Issue number | 2 |
DOIs | |
Publication status | Published - 20 Oct 2006 |
Externally published | Yes |