| � 1999. The American Astronomical Society. All rights reserved. Printed in U.S.A. A CANDIDATE SUBSTELLAR COMPANION TO CD �33�7795 (TWA 5) (2007) | |||||||||||||
Abstract | |||||||||||||
| We present the discovery of a candidate substellar object in a survey of young stars in the solar vicinity using the sensitivity and spatial resolution afforded by the NICMOS coronagraph on the Hubble Space Telescope. The H � 12.1 mag object was discovered approximately 2 � from the TW Hydrae association member CD �33�7795 (TWA 5), and the photometry implies a spectral type M8–M8.5, with a temperature of ∼2600 K. We estimate �5 that the probability of a chance alignment with a background object of this nature is less than 2 # 10 and therefore postulate that the object (TWA 5B) is physically associated at a projected separation of 100 AU. Given the likely youth of the primary (∼10 Myr), current brown dwarf cooling models predict a mass of ≈20M Jup for TWA 5B. Subject heading: stars: low-mass, brown dwarfs | |||||||||||||
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