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arXiv · 0804.1006

Towards Asteroseismology of PG1605+072

A. Tillich·U. Heber·S. J. O'Toole·R. Østensen·S. Schuh
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Abstract

We present our attempt to characterise the frequency spectrum of the bright V 361 Hya star PG1605$+$072 from atmospheric parameter and radial velocity variations through a spectroscopic approach. Therefore we used time resolved spectroscopy ($\approx$9000 spectra) to detect line profile variations from which variations of the effective temperature and gravity, together with their phases, are extracted by means of a quantitative spectral analysis. The theoretical modelling of adequate pulsation modes with the \textit{BRUCE} and \textit{KYLE} codes allows to derive constraints on the mode's degree and order from the observed frequencies.

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A. Tillich, U. Heber, S. J. O'Toole, R. Østensen, S. Schuh. 2008-04-07. Towards Asteroseismology of PG1605+072. https://arxiv.org/abs/0804.1006

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