Ten Low‐Mass Companions from the Keck Precision Velocity Survey | Zendy

Steven S. Vogt | Zendy; R. Paul Butler | Zendy; Geoffrey W. Marcy | Zendy; Debra A. Fischer | Zendy; D. Pourbaix | Zendy; Kevin Apps | Zendy; Gregory Laughlin | Zendy

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Ten Low‐Mass Companions from the Keck Precision Velocity Survey

Author(s) -

Steven S. Vogt,

R. Paul Butler,

Geoffrey W. Marcy,

Debra A. Fischer,

D. Pourbaix,

Kevin Apps,

Gregory Laughlin

Publication year - 2002

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/338768

Subject(s) - physics , exoplanet , planet , astrometry , astrophysics , brown dwarf , radial velocity , astronomy , low mass , orbital inclination , stars , binary number , arithmetic , mathematics

Ten new low mass companions have emerged from the Keck precision Dopplervelocity survey, with minimum (msini) masses ranging from 0.8 mjup to 0.34msun. Five of these are planet candidates with msini < 12 mjup, two are browndwarf candidates with msini ~30 mjup, and three are low mass stellarcompanions. Hipparcos astrometry reveals the orbital inclinations and massesfor three of the (more massive) companions, and it provides upper limits to themasses for the rest. A new class of extrasolar planet is emerging,characterized by nearly circular orbits and orbital radii greater than 1 AU.The planet HD 4208b appears to be a member of this new class. The massdistribution of extrasolar planets continues to exhibit a rapid rise from 10mjup toward the lowest detectable masses near 1 msat.Comment: 26 pages, TeX, plus 13 postscript figure

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