Multiyear and multisite photometric campaigns on the bright high-amplitude pulsating subdwarf B star EC 01541-1409

Autor: Nysewander, M. C., Baran, A, O'Toole, S., Zietsman, E., Haislip, J. B., Winiarski, M., Barlow, B. N., Quint, A. C., Doennig, A. M., LaCluyze, A. P., McCart, II, P. A., Drozdz, M., Chen, C.-W., Honer, C., Beck, P., Thompson, M. A., Ivarsen, K. M., Chen, W.-P., Reichart, D. E., Ostensen, R. H., Gilker, J. T., Hicks, L. H., Reed, M. D., Degroote, P., Lin, C.-C., Kilkenny, D.
Jazyk: angličtina
Rok vydání: 2012
DOI: 10.17615/py67-6g02
Popis: We present follow-up observations of the pulsating subdwarf B (sdB) star EC 01541–1409 as part of our efforts to resolve pulsation spectra for use in asteroseismological analyses. This paper reports on data obtained from a single-site campaign, during 2008, and a multisite campaign, during 2009. From limited 2008 data, we were able to clearly resolve and pre-whiten 24 periods. A subsequent multisite campaign spanning nearly 2 months found over 30 individual periodicities most of which were unstable in amplitude and/or phase. Pulsation amplitudes were found to the detection limit, meaning that further observations would likely reveal more periodicities.
Databáze: OpenAIRE