A Brown Dwarf Candidate in the Praesepe Open Cluster
Open Access
- 10 April 1998
- journal article
- research article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 497 (1) , L47-L50
Abstract
We present optical and infrared observations of RPr1, a faint (I = 21.01) and very red object (I - K = 4.57) discovered in a deep CCD survey, covering an area of 800 square arcmin of the Praesepe open cluster. A low resolution spectrum shows that RPr1 is a very late object, the latest object in Praesepe for which a spectrum has been taken to date. Our estimates give a mass between 0.063 and 0.084 solar masses, and indicate that RPr1 may turn out to be the first brown dwarf in this cluster.Comment: 7 pages, 3 Postscript figures, to be published in The Astrophysical Journal LetterKeywords
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