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
TL;DR
This paper presents initial photometric and spectroscopic findings for KBS 13, a rare sdB+dM binary system with an exceptionally low secondary mass, contributing to understanding of such binary star configurations.
Contribution
It reports the discovery and preliminary analysis of KBS 13, highlighting its unique low secondary mass and orbital characteristics among sdB+dM binaries.
Findings
Orbital period of 0.2923 days
Secondary minimum mass is the smallest known for such systems
Radial velocity semi-amplitude of 22.82 km/s
Abstract
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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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · Physics of Superconductivity and Magnetism · Particle Accelerators and Free-Electron Lasers