Time resolved spectroscopy of the multiperiodic pulsating subdwarf B star PG1605+072

Details Time resolved spectroscopy of the multiperiodic pulsating subdwarf B star PG1605+072 Time resolved spectroscopy of the multiperiodic pulsating subdwarf B star PG1605+072

2006-12-19

arxiv.org/abs/astro-ph/0612537v1

Astronomy and Astrophysics

Astrophysics

2 pages, 2 figures, proceedings of the "Vienna Workshop on the Future of Asteroseismology", to appear in Communications in Ast

Scientific paper

10.1553/cia150s259

We present results for the 2m spectroscopic part of the MultiSite Spectroscopic Telescope campaign, which took place in May/June 2002. In order to perform an asteroseismological analysis on the multiperiodic pulsating subdwarf B star PG 1605+072 we used over 150 hours of time resolved spectroscopy in order to search for and analyse line profile variations by using phase binning. We succeeded in finding variations in effective temperature and gravity for four modes. A pilot analysis using the \textit{BRUCE} and \textit{KYLIE} programs and assuming strong rotation and low inclination favours models with $l=1$ or $l=2$ with $m\leq0$.

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