| ( 2000. The American Astronomical Society. All rights reserved. Printed in U.S.A. A CANDIDATE SUBSTELLAR COMPANION TO HR 7329 (2007) | |||||||||||||
Abstract | |||||||||||||
| We present the discovery of a candidate substellar companion from a survey of nearby young stars made with the Near-Infrared Camera and Multiobject Spectrometer coronagraph on the Hubble Space Telescope. The H B 12 mag object was discovered approximately 4A from the young A0 V star HR 7329. Using follow-up spectroscopy from the Space Telescope Imaging Spectrograph, we derive a spectral type between M7 V and M8 V with an e†ective temperature of D2600 K. We estimate that the probability of a chance alignment with a foreground dwarf star of this nature is D10~8, and therefore we suggest that the object (HR 7329B) is physically associated with HR 7329, with a projected separation of 200 AU. Current brown dwarf cooling models indicate a mass of less than 50 M for HR 7329B based on age Jup estimates of 30 Myr for HR 7329A. | |||||||||||||
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