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Mapping the Non-Radial Pulsations

Published online by Cambridge University Press:  12 April 2016

S.V. Berdyugina ,
H. Korhonen ,
C. Schrijvers  and
J.H. Telting
S.V. Berdyugina
Affiliation:
Astronomy Division, University of Oulu, P.O. Box 3000, FIN-90401 Oulu, Finland
H. Korhonen
Affiliation:
Astronomy Division, University of Oulu, P.O. Box 3000, FIN-90401 Oulu, Finland
C. Schrijvers
Affiliation:
Astronomical Institute Anton Pannekoek, University of Amsterdam, Kruislaan 403, NL-1098 SJ Amsterdam, Netherlands
J.H. Telting
Affiliation:
Isaac Newton Group of Telescopes, NWO, Apartado 321, E-38780 S/C de La Palma, Canarias, Spain

Abstract

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We apply the surface imaging technique to high-resolution spectra of the rapidly rotating β Cep-type star ω1 Sco. Assuming only temperature fluctuations due to pulsations, we obtain a map of the surface corotating with the dominant pulsation mode. Prom the map we identify the dominant mode and find traces of a second pulsation mode. We conclude that the traditional surface imaging technique can be successfully used for mapping stellar non-radial pulsations.

Type
3. Periodic Variations
Information
International Astronomical Union Colloquium , Volume 175: The Be Phenomenon in Early-Type Stars , 2000 , pp. 268 - 271
Copyright
Copyright © Astronomical Society of the Pacific 2000

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