Asteroseismology of sdB stars with FUSE.

Details Asteroseismology of sdB stars with FUSE. Asteroseismology of sdB stars with FUSE.

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aspc..348..215k&link_type=abstract

Astrophysics in the Far Ultraviolet: Five Years of Discovery with FUSE ASP Conference Series, Vol. 348, Proceedings of the Confe

Astronomy and Astrophysics

Astrophysics

Scientific paper

The hot subdwarfs B (sdB) stars form an homogeneous group populating an extension of the horizontal branch (HB) in the (Teff--log g) diagram towards temperatures up to 40,000 K. The recent discovery that many of them are multimode pulsators has triggered a large observational and theoretical effort. We discuss the possibility to perform space--based asteroseismology with FUSE and we demonstrate that periodic luminosity variations are already detected in archival TTAG data of sdB stars. In particular, we report on the FUSE observation of the pulsating PG 1219+534 which shows the presence of periodic variations consistent with those reported from ground--based observations at 6.9 mHz and 7.8 mHz.

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