Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics
Scientific paper
2009-08-26
Astronomy and Astrophysics
Astrophysics
Solar and Stellar Astrophysics
4 pages, accepted for publication in A&A Letters
Scientific paper
We present radial velocities of the M8V-type, very low-mass star vB 10 that have been obtained at four different epochs of observations between 2001 and 2008. We use high-resolution (R ~ 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 ~1 km/s, a result that is consistent with the recent finding of a massive planet companion around the star by Pravdo & Shaklan (2009). 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.
del Burgo Carlos
Deshpande Rohit
Martin Eduardo L.
Montgomery Martin
Zapatero Osorio Maria R.
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