ISENTROPIC MODELS FOR FINAL STAGES OF STELLAR EVOLUTION,
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1967
- Accession Number
- AD0659048
Entities
People
- G. Rakavy
- G. Shaviv
Organizations
- California Institute of Technology