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Analysis of rosette modes of oscillations in rotating stars

Published online by Cambridge University Press:  18 February 2014

Masao Takata  and
Hideyuki Saio
Masao Takata
Affiliation:
Department of Astronomy, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan email: takata@astron.s.u-tokyo.ac.jp
Hideyuki Saio
Affiliation:
Astronomical Institute, Graduate School of Science, Tohoku University, 6-3 Aramaki, Aoba-ku, Sendai 980-8578, Japan email: saio@astr.tohoku.ac.jp
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Abstract

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We analyse the rosette modes of oscillations in rotating stars, which are characterised by rosette patterns of the kinetic-energy distribution on the meridional plane. Following our previous argument that these modes are generated by the rotation-induced interaction among eigenmodes with almost the same frequency, we discuss the structure of the rosette patterns base on the JWKB analysis. We also demonstrate that there exist nonaxisymmetric rosette modes.

Keywords

stars: interiorsstars: oscillationsstars: rotation
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S301: Precision Asteroseismology , August 2013 , pp. 497 - 498
Copyright
Copyright © International Astronomical Union 2014 

References

Ballot, J., Lignières, F., Prat, V., Reese, D. R., & Rieutord, M. 2012, ASP-CS, 462, 389Google Scholar
Takata, M. & Saio, H. 2013, PASJ, 65, 68CrossRefGoogle Scholar