KBS 13 -- a Rare Reflection Effect sdB Binary with an M Dwarf Secondary

B.-Q. For; E. M. Green; G. Fontaine; H. Drechsel; H. Edelmann; S. Nesslinger

arxiv: 0809.4517 · v1 · submitted 2008-09-26 · 🌌 astro-ph

KBS 13 -- a Rare Reflection Effect sdB Binary with an M Dwarf Secondary

B.-Q. For , H. Edelmann , E. M. Green , H. Drechsel , S. Nesslinger , G. Fontaine This is my paper

classification 🌌 astro-ph

keywords secondaryminimumorbitalvelocitybinarydaysdifferentialdiscovered

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We report preliminary VRI differential photometric and spectroscopic results for KBS 13, a recently discovered non-eclipsing sdB+dM system. Radial velocity measurements indicate an orbital period of 0.2923 +/- 0.0004 days with a semi-amplitude velocity of 22.82 +/- 0.23 km s-1. This suggests the smallest secondary minimum mass yet found. We discuss the distribution of orbital periods and secondary minimum masses for other similar systems.

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KBS 13 -- a Rare Reflection Effect sdB Binary with an M Dwarf Secondary

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