Two large amplitude slowly pulsating hot subdwarf stars

Author: Koen C.  

Publisher: Oxford University Press

ISSN: 0035-8711

Source: Monthly Notices of the Royal Astronomical Society, Vol.415, Iss.4, 2011-08, pp. : 3042-3048

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Abstract

ABSTRACTThe discovery observations of two new slowly pulsating subdwarf B stars (V1093 Her stars), BPS CS22890−74 and PB 7032, are presented. Both stars are highly multiperiodic, and have – for V1093 Her stars – large amplitudes. Published descriptions of the (wavelength) spectra of the stars conflict, but new spectra show that both are sdB stars with effective temperatures below 30 000 K. BPS CS22890−74 has a cool companion.

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