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Are There Different Types of Variability Among B Stars?
Published online by Cambridge University Press: 12 April 2016
Extract
Almost every survey for β Cephei detection has been restricted to the small area of the HR diagram that contained the 15-20 first discovered. (Table 1). Of course, every new short period pulsating star found in such an a priori limited region has strengthened the impression that an instability box could be derived from the study of the statistics of β Cep variables. That conclusion could have led to the discovery of a β Cep pulsation mechanism related to a particular mass - age internal structure status. On the contrary if the phenomenon is due to a mechanism acting in a wider extension of the HR diagram (and so probably better related to envelope properties) one still has to explain why its detection seems to be easier in the B0-B1 zone. Moreover, even within the “instability box” some classical β Cep could be either in core hydrogen burning phase or others in shell hydrogen burning phase, i.e. with quite different internal structures.
- Type
- III. β-Cephei and 53 Persei Variables
- Information
- International Astronomical Union Colloquium , Volume 58: Stellar Hydrodynamics , August 1980 , pp. 353 - 359
- Copyright
- Copyright © Reidel 1980
References
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