Physical Properties of Binary Brown Dwarfs

Details Physical Properties of Binary Brown Dwarfs Physical Properties of Binary Brown Dwarfs

Nov 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010hia....15..757b&link_type=abstract

Highlights of Astronomy, Volume 15, p. 757-757

Astronomy and Astrophysics

Astronomy

Scientific paper

Astrometric observations of binary brown dwarfs yield dynamical masses of the components independently of theoretical models. We give an update on our long-term high-resolution spectroscopic and photometric monitoring programme of spatially resolved binary brown dwarfs using ground-based adaptive optics and the Hubble Space Telescope. We present current orbital fits, including refined dynamical mass estimate of the Kelu-1 AB system. The results seem to support the previously reported trend that evolutionary and atmospheric models might underestimate the mass of very-low-mass stars and brown dwarfs.

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