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Slowly Variable Early F-type Stars

Published online by Cambridge University Press:  12 April 2016

L.A. Balona  and
K. Krisciunas
L.A. Balona
Affiliation:
South African Astronomical Observatory, P.O. Box 9, Observatory 7935, Cape, South Africa
K. Krisciunas
Affiliation:
Joint Astronomy Centre 660 N. A’ohōkū Place, University Park, Hilo, Hawaii 96720, USA

Abstract

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A third periodicity is found in the early F-type star γ Dor which probably rules out an interpretation in terms of differential rotation of a spotted star. One of the two periods in 9 Aur is not visible in the radial velocity. This is not explained by the star spot model, but may indicate that the two periodicities are nonradial pulsations of different spherical harmonic degrees.

Type
Part 2. Poster Papers
Information
International Astronomical Union Colloquium , Volume 155: Astrophysical Applications of Stellar Pulsation , 1995 , pp. 341 - 342
Copyright
Copyright © Astronomical Society of the Pacific 1995

References

Balona, L.A., Krisciunas, K., & Cousins, A.W.J. 1994, MNRAS, 270, 905 Google Scholar
Krisciunas, K., Griffin, R.F., Guinan, E.F., Luedeke, K.D., & McCook, G.P. 1995, MNRAS, in pressGoogle Scholar
Mantegazza, L., Poretti, E., & Zerbi, F.M. 1994, MNRAS, 270, 439 Google Scholar