Accession Number:

AD0659048

Title:

ISENTROPIC MODELS FOR FINAL STAGES OF STELLAR EVOLUTION,

Descriptive Note:

Corporate Author:

CALIFORNIA INST OF TECH PASADENA

Personal Author(s):

Report Date:

1967-01-01

Pagination or Media Count:

24.0

Abstract:

In order to obtain a general, rough approximate picture of the final stages of evolution of stars, sequences of homogeneous-isentropic models have been constructed. During evolution, a star loses entropy by means of photon radiation or neutrino losses. Only when a nuclear fuel is ignited, the loss of entropy is halted or even a slight, insignificant, increase in entropy may occur. A star contracting through photon losses tends to be completely convective and thus homogeneous and isentropic. Detailed calculations of a few models seem to show that for stars heavier than about 2 solar masses, the deviations are small enough so that the general picture obtained by considering isentropic models is not changed in an essential way. Author

Subject Categories:

  • Astrophysics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE