A Substellar Companion to the Dusty Pleiades Star HD 23514

Details A Substellar Companion to the Dusty Pleiades Star HD 23514 A Substellar Companion to the Dusty Pleiades Star HD 23514

2011-12-20

arxiv.org/abs/1112.4815v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

18 pages, 5 figures, accepted in ApJ

Scientific paper

With adaptive optics imaging at Keck observatory, we have discovered a substellar companion to the F6 Pleiades star HD 23514, one of the dustiest main-sequence stars known to date (L_{IR}/L_{*}~2%). This is one of the first brown dwarfs discovered as a companion to a star in the Pleiades. The 0.06 M$_\odot$ late-M secondary has a projected separation of ~360 AU. The scarcity of substellar companions to stellar primaries in the Pleiades combined with the extremely dusty environment make this a unique system to study.

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