New pulsation pattern of RZ Cas observed spectroscopically in 2006

Details New pulsation pattern of RZ Cas observed spectroscopically in 2006 New pulsation pattern of RZ Cas observed spectroscopically in 2006

Jun 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007coast.150...67l&link_type=abstract

Communications in Astroseismology, Vol. 150, p.67

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Scientific paper

We investigated the radial velocities of the mass-accreting Algol-type star RZ Cas measured from new observations obtained in 2006. After subtracting an improved orbital solution and all low-frequency variations we searched for the signature of short-term non-radial pulsations. We found three pulsation modes where one was never observed before. Also the amplitudes of the two other modes have changed since 2001. During the eclipse phases we observed a much stronger increase of the pulsation amplitudes than in 2001 and a less pronounced anomaly of the Rossiter-McLaughlin effect.

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