HS 2231+2441: A New Eclipsing sdB Binary of the HW Vir Type

Details HS 2231+2441: A New Eclipsing sdB Binary of the HW Vir Type HS 2231+2441: A New Eclipsing sdB Binary of the HW Vir Type

Sep 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..372..483o&link_type=abstract

15th European Workshop on White Dwarfs ASP Conference Series, Vol. 372, proceedings of the conference held 7-11 August, 2006 in

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Scientific paper

The discovery of a new eclipsing sdB+dM system is announced. We present photometric and spectroscopic data which allow us to calculate the physical parameters of the components and solve the orbit of the system. The cool companion must be at the low mass limit for an M dwarf star, with an orbital radial velocity semi-amplitude of K_1 = 49.1 km/s. In other respects the system is strikingly similar to the other three known systems of the HW Vir type.

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