On the pulsation properties of roAp stars.

Details On the pulsation properties of roAp stars. On the pulsation properties of roAp stars.

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001sf2a.conf..131b&link_type=abstract

Abstracts from SF2A-2001: Semaine de l'Astrophysique Francaise, meeting held in Lyon, France, May 28-June 1st, 2001, Eds.: F. Co

Astronomy and Astrophysics

Astrophysics

Scientific paper

It is known from two decades that some Ap stars have pulsations with short periods of few minutes. They are known as rapidly oscillating Ap (roAp) stars. These pulsations are strongly affected by the intense magnetic field (several kG) and by the rotation of the star. I will present the properties of the modes affected by the combined effect of a dipole magnetic field and an inclined rotation. Both Coriolis and centrifugal distortion effects are taken into account. I will focus on the case of l=1 (dipole modes) which are the most observed modes in roAp stars. Finally, the amplitude ratios in observer's system will be also presented and compared with observations.

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