Close binary EHB stars from SPY

R. Napiwotzki , C.A. Karl , T. Lisker , U. Heber , N. Christlieb , D. Reimers , G. Nelemans , D. Homeier

Authors on Pith no claims yet

classification 🌌 astro-ph

keywords binaryhe-sdoresultsstarssubdwarfbinariesclosecompared

read the original abstract

We present the results of a radial velocity (RV) survey of 46 subdwarf B (sdB) and 23 helium-rich subdwarf O (He-sdO) stars. We detected 18 (39%) new sdB binary systems, but only one (4%) He-sdO binary. Orbital parameters of nine sdB and sdO binaries, derived from follow-up spectroscopy, are presented. Our results are compared with evolutionary scenarios and previous observational investigations.

This paper has not been read by Pith yet.

Close binary EHB stars from SPY

discussion (0)