Line-profile variations in pulsating subdwarf-B stars as a pulsation mode diagnostic

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dc.creatorSchoenaers, C.
dc.creatorLynas-Gray, A. E.
dc.date2005-11-01
dc.date.accessioned2026-07-07T06:44:48Z
dc.date.available2026-07-07T06:44:48Z
dc.descriptionIn previous attempts to perform seismic modelling 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, that is, 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 observation.
dc.description8 pages, 4 figures. To appear in Baltic Astronomy, proceedings of the 2nd meeting on Hot Subdwarf Stars, La Palma, June 2005
dc.identifierhttps://arxiv.org/abs/astro-ph/0511038
dc.identifierhttp://arxiv.org/abs/astro-ph/0511038
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/102870
dc.subjectAstrophysics
dc.titleLine-profile variations in pulsating subdwarf-B stars as a pulsation mode diagnostic
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