# Improved radial velocity orbit of the young binary brown dwarf candidate Cha Hα 8

@article{Joergens2010ImprovedRV,
title={Improved radial velocity orbit of the young binary brown dwarf candidate Cha H$\alpha$ 8},
author={Viki Joergens and Andreas Mueller and Sabine Reffert},
journal={Astronomy and Astrophysics},
year={2010},
volume={521}
}
• Published 11 June 2010
• Physics, Geology
• Astronomy and Astrophysics
The very young brown dwarf candidate Cha Hα 8 was recently discovered to have a close (∼1 AU) companion by means of radial velocity monitoring. We present additional radial velocity data obtained with UVES/VLT between 2007 and 2010, which significantly improve the orbit determination of the system. The combined data set spans ten years of radial velocity monitoring for Cha Hα 8. A Kepler fit to the data yields an orbital period of 5.2 years, an eccentricity of e = 0.59, and a radial velocity…

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