Pulsational analysis of roAp stars

Details Pulsational analysis of roAp stars Pulsational analysis of roAp stars

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007smma.conf..255s&link_type=abstract

Spectroscopic methods in modern astrophysics. Proceedings of the conference held 13-15 September 2006, Moscow, Russia. Eds. L. M

Astronomy and Astrophysics

Astrophysics

Scientific paper

In this paper we present recent results of the pulsational study of the rapidly oscillating Ap (roAp) stars. The unique pulsational properties of roAp stars allowed us to resolve the vertical structure of roAp atmospheres and to study propagation of pulsation waves. We used phase--amplitude diagrams to establish relationship between pulsations and vertical stratification of chemical elements. The aim of our analysis is to derive from observations a complete picture of the depth-dependence of amplitude and phase of magnetoacoustic waves and to correlate resulting vertical mode cross-sections with other pulsational characteristics and with the fundamental stellar parameters.

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