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Paper: Towards Asteroseismology of the Multiperiodic Pulsating Subdwarf B Star PG1605+072
Volume: 392, Hot Subdwarf Stars and Related Objects
Page: 327
Authors: Tillich, A.; Heber, U.; O’Toole, S.J.; Østensen, R.; Schuh, S.
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 (≈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 BRUCE and KYLE codes allows to derive constraints on the mode’s degree and order from the observed frequencies.
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