Title

Infrared radial velocities of vB 10

Authors

Authors

M. R. Z. Osorio; E. L. Martin; C. del Burgo; R. Deshpande; F. Rodler;M. M. Montgomery

Comments

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Abbreviated Journal Title

Astron. Astrophys.

Keywords

stars: late-type; stars: low-mass, brown dwarfs; stars: individual: vB; 10; techniques: radial velocities; planetary systems; binaries: general; LOW-MASS STARS; BROWN DWARF; MAIN-SEQUENCE; SPECTRA; VB-10; SPECTROSCOPY; EXOPLANETS; CANDIDATE; COMPANION; JUPITER; Astronomy & Astrophysics

Abstract

We present radial velocities of the M8V-type, very low-mass star vB 10 obtained at four different epochs between 2001 and 2008. We use high-resolution (R similar to 20 000) near-infrared (J-band) spectra taken with the NIRSPEC instrument on the Keck II telescope. Our data suggest that vB 10 shows radial velocity variability with an amplitude of similar to 1 km s(-1), a result that is consistent with the recent finding of a massive planet companion around the star. More velocity measurements and a better sampling of the orbital phase are required to precisely constrain the orbital parameters and the individual masses of the pair.

Journal Title

Astronomy & Astrophysics

Volume

505

Issue/Number

1

Publication Date

1-1-2009

Document Type

Article

Language

English

First Page

L5

Last Page

L8

WOS Identifier

WOS:000270436000002

ISSN

0004-6361

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