SIMBAD references

2006BaltA..15..219S - Baltic Astronomy, 15, 219-226 (2006/April-0)

Line-profile variations in pulsating sdB stars as a pulsation mode diagnostic.


Abstract (from CDS):

In previous attempts to perform seismic modeling of pulsating subdwarf-B stars, various mode identification techniques are used with uncertain results. We investigated a method so far neglected in sdB stars, but very successful for main-sequence pulsators, i.e., mode identification from the line-profile variations caused by stellar pulsation. We report the calculation of time-resolved synthetic spectra for sdB stars pulsating with various combinations of pulsation modes; these calculations were carried out over appropriate ranges of effective temperature, surface gravity and helium abundances. Preliminary tests using these synthetic line-profile variations demonstrated their potential for mode identification by comparison with observations.

Abstract Copyright:

Journal keyword(s): stars: hot subdwarfs - stars: oscillations

Simbad objects: 10

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