Radial velocity observations of VB10
1 University of Central Florida, Department of Physics, Orlando, FL 32816-2385, USA
2 Centro de Astrobiologia (CSIC-INTA), Ctra. Ajalvir km 4, 28850 Torrejon de Ardoz, Madrid, Spain
3 School of Cosmic Physics, Dublin Institute of Advance Studies, Ireland
4 Instituto de Astrofisica de Canarias, 38025 La Laguna, Tenerife, Spain
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VB 10 is the smallest star known to harbor a planet according to the recent astrometric study of Pravdo & Shaklan . Here we present near-infrared (J-band) radial velocity of VB 10 performed from high resolution (R~20,000) spectroscopy (NIRSPEC/KECK II). Our results  suggest radial velocity variability with amplitude of ~1 km/s, a result that is consistent with the presence of a massive planet companion around VB10 as found via long-term astrometric monitoring of the star by Pravdo & Shaklan. Employing an entirely different technique we verify the results of Pravdo & Shaklan.
© Owned by the authors, published by EDP Sciences, 2011