The GL 569 Multiple System

Details The GL 569 Multiple System The GL 569 Multiple System

2006-03-07

arxiv.org/abs/astro-ph/0603165v2

Astrophys.J. 644 (2006) 1183-1192

Astronomy and Astrophysics

Astrophysics

29 pages, 10 figures, accepted for publication in the Astrophysical Journal; minor corrections to Section 5.1; changed typo in

Scientific paper

10.1086/503867

We report the results of high spectral and angular resolution infrared observations of the multiple system GL 569 A and B that were intended to measure the dynamical masses of the brown dwarf binary believed to comprise GL 569 B. Our analysis did not yield this result but, instead, revealed two surprises. First, at age ~100 Myr, the system is younger than had been reported earlier. Second, our spectroscopic and photometric results provide support for earlier indications that GL 569 B is actually a hierarchical brown dwarf triple rather than a binary. Our results suggest that the three components of GL 569 B have roughly equal mass, ~0.04 Msun.

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