Asteroseismic Determination of sdB Stars Fundamental Parameters

Details Asteroseismic Determination of sdB Stars Fundamental Parameters Asteroseismic Determination of sdB Stars Fundamental Parameters

Jun 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004ap%26ss.291..395c&link_type=abstract

Astrophysics and Space Science, v. 291, Issue 3, p. 395-402 (2004).

Astronomy and Astrophysics

Astrophysics

5

Hot B Subdwarfs, Stellar Oscillations, Asteroseismology, Star:, Feige 48

Scientific paper

Recent observational efforts and theoretical breakthroughs have encouraged the development of detailed asteroseismic analyses of rapidly oscillating sdB stars (the so-called EC14026 stars). This led to the first seismic determinations of the fundamental parameters that define the structure of EHB stars. We briefly review the current status of these analyses, discussing some of the properties of acoustic modes in EHB models that affect the asteroseismology of these stars. We then recall the basic ideas behind the method we developed in an attempt to objectively extract, from models, asteroseismic solutions suitable to any given sdB pulsator. A preliminary application of this method to the pulsating sdB star Feige 48 is also presented.

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