Pulsation modes detected by CoRoT in the hot Be star HD 51452

Details Pulsation modes detected by CoRoT in the hot Be star HD 51452 Pulsation modes detected by CoRoT in the hot Be star HD 51452

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011sf2a.conf..231n&link_type=abstract

SF2A-2011: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics Eds.: G. Alecian, K. Belkacem,

Astronomy and Astrophysics

Astrophysics

Stars: Emission-Line, Be -- Stars: Individual: Hd 51452 -- Stars: Oscillations -- Stars: Rotation

Scientific paper

HD 51452 is a hot Be star observed by CoRoT and simultaneous spectroscopy. This star shows pulsation p modes of β Cephei type as expected for this spectral type, as well as g modes with lower frequencies, which are not expected in such stars. We investigate whether this is due to the rotational flattening of the star, allowing for cooler regions at the equator from which SPB-type g-modes excited by the κ mechanism could arise, but conclude that the detected modes are rather stochastic g-modes.

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