DYNAMICAL MASS OF GJ 802B: A BROWN DWARF IN A TRIPLE SYSTEM

摘要

We report a dynamical measurement of the mass of the brown dwarf GJ 802B using aperture-masking interfero-metry and astrometry. In addition, we report the discovery that GJ 802A is itself a close spectroscopic noneclipsing binary with a 19 hr period. We f