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Time Scales of Stars during the Crossing of the Cepheid Strip

Published online by Cambridge University Press:  12 April 2016

D. Lauterborn ,
S. Refsdal  and
M. L. Roth
D. Lauterborn
Affiliation:
Hamburg, Oslo
S. Refsdal
Affiliation:
Hamburg, Oslo
M. L. Roth
Affiliation:
Hamburg, Oslo

Extract

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In a recent paper (LAUTERBORN, REFSDAL, WEIGERT, 1971) the central He burning phase of 5 M⊙ stars was investigated. It was shown that the structure of such stars is very sensitive to the chemical profile in and above the hydrogen burning shell. The loops in the H-R diagram which such stars often make were for instance found to be very sensitive to changes in this profile. It was also shown that an assumed mass loss of about 10% in the red giant region will suppress a loop completely.

Type
I. New Phenomena in Very Cool, or Very Young, or Very Peculiar Variables
Information
International Astronomical Union Colloquium , Volume 15: New Directions and Frontiers in Variable Stars Research , 1971 , pp. 96
Copyright
Copyright © Cambridge University Press 1971

References

Lauterborn, D., Refsdal, S., Weigert, A., 1971, Astr. Astrophys. 10, 97.Google Scholar
Lauterborn, D., Refsdal, S., Roth, M. L., 1971, Astr. Astrophys. 13, 119.Google Scholar