HR7672B: A Benchmark Brown Dwarf with High Eccentricity

Details HR7672B: A Benchmark Brown Dwarf with High Eccentricity HR7672B: A Benchmark Brown Dwarf with High Eccentricity

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21943927c&link_type=abstract

American Astronomical Society, AAS Meeting #219, #439.27

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the first three-dimensional orbit and dynamical mass determination of the L4-dwarf HR7672B. Our observations, which include more than 24 years of precise Doppler measurements and 10 years
of direct imaging astrometry, firmly establish this companion as a substellar object with a high ( 0.5)
eccentricity. Conveniently orbiting a G0V star, HR7672B is presently the only brown dwarf with a known mass, age, metallicity, and luminosity, and therefore represents an ideal laboratory for testing theoretical evolutionary models and synthetic spectral models.

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