Long-term photometric monitoring of the hybrid subdwarf B pulsator HS0702+6043

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dc.creatorLutz, R.
dc.creatorSchuh, S.
dc.creatorSilvotti, R.
dc.creatorKruspe, R.
dc.creatorDreizler, S.
dc.date2008-12-28
dc.date.accessioned2026-07-07T12:22:59Z
dc.date.available2026-07-07T12:22:59Z
dc.descriptionPulsating subdwarf B stars oscillate in short-period $p$-modes or long-period $g$-modes. HS 0702 + 6043 is one of currently three objects known to show characteristics of both types and hence is classified as hybrid pulsator. We briefly present our analysis of the $g$-mode domain of this star, but focus on first results from long-term photometric monitoring in particular of the $p$-mode oscillations. We present a high-resolution frequency spectrum, and report on our efforts to construct a multi-season O--C diagram. Additionally to the standard (although nontrivial) exercise in asteroseismology to probe the instantaneous inner structure of a star, measured changes in the pulsation frequencies as derived from an {O--C} diagram can be compared to theoretical evolutionary timescales. Within the {EXOTIME} program, we also use this same data to search for planetary companions around extreme horizontal branch objects.
dc.description6 pages, to be published in "Interpretation of asteroseismic data", proceedings of the HELAS NA5 Workshop, eds. W. Dziembowski, M. Breger and M. Thompson, Communications in Asteroseismology, 157
dc.identifierhttps://arxiv.org/abs/0812.4859
dc.identifierhttp://arxiv.org/abs/0812.4859
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/213841
dc.subjectAstrophysics
dc.titleLong-term photometric monitoring of the hybrid subdwarf B pulsator HS0702+6043
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