Journal Article

Two large amplitude slowly pulsating hot subdwarf stars

C. Koen

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 415, issue 4, pages 3042-3048
Published in print August 2011 | ISSN: 0035-8711
Published online August 2011 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2011.18929.x
Two large amplitude slowly pulsating hot subdwarf stars

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The 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.

Keywords: stars: individual: BPS CS22890−74; stars: individual: PB 7032; stars: oscillations; subdwarfs

Journal Article.  4152 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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