HD 91669B: A NEW BROWN DWARF CANDIDATE FROM THE MCDONALD OBSERVATORY PLANET SEARCH

Journal Article · Sun Mar 15 00:00:00 EDT 2009 · Astronomical Journal (New York, N.Y. Online)

DOI:https://doi.org/10.1088/0004-6256/137/3/3529; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)· OSTI ID:21269291

Wittenmyer, Robert A; Endl, Michael; Cochran, William D; Ramirez, Ivan; MacQueen, Phillip J; Shetrone, Matthew ^[1]; Reffert, Sabine ^[2]

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1. McDonald Observatory, University of Texas at Austin, Austin, TX 78712 (United States)
2. Zentrum fuer Astronomie Heidelberg, Landessternwarte, Koenigstuhl 12, 69117 Heidelberg (Germany)

We report the detection of a brown dwarf candidate orbiting the metal-rich K dwarf HD 91669, based on radial-velocity data from the McDonald Observatory Planet Search. HD 91669b is a substellar object in an eccentric orbit (e = 0.45) at a separation of 1.2 AU. The minimum mass of 30.6M {sub Jup} places this object firmly within the brown dwarf desert for inclinations i {approx}> 23{sup 0}. This is the second rare close-in brown dwarf candidate discovered by the McDonald planet search program.

• OSTI ID: 21269291
• Journal Information: Astronomical Journal (New York, N.Y. Online), Vol. 137, Issue 3; Other Information: DOI: 10.1088/0004-6256/137/3/3529; Country of input: International Atomic Energy Agency (IAEA); ISSN 1538-3881
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
DWARF STARS
INCLINATION
METALS
ORBITS
PLANETS
RADIAL VELOCITY