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Observational Evidence for Atmospheric Physical Characteristics Relevant to Stellar Evolution

Published online by Cambridge University Press:  30 March 2016

R. and G. Cayrel
R. and G. Cayrel*
Affiliation:
Observatoire de Paris

Extract

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As a star burns its nuclear fuel, its radius R and its luminosity L are modified. Its mass may as well be affected if the mass loss rate has a time scale comparable to the nuclear time scale; this is likely to occur for stars of very high luminosity. Currently, the change in radius R and luminosity L of an evolving star is described in the socalled theoretical Herzsprung-Russel diagramme with in abscissa the logarithm of the effective temperature defined by:

Type
Joint Dicussions
Information
Highlights of Astronomy , Volume 4 , Issue 2: Highlights of Astronomy. As presented at the XVIth General Assembly of the IAU, 1976 (Part II) , 1977 , pp. 105 - 114
Copyright
Copyright © Reidel 1977

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