Effects of mass loss on the evolution of massive stars. II - Critical mass loss rates

Details Effects of mass loss on the evolution of massive stars. II - Critical mass loss rates Effects of mass loss on the evolution of massive stars. II - Critical mass loss rates

Jul 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...231..193d&link_type=abstract

Astrophysical Journal, Part 1, vol. 231, July 1, 1979, p. 193-197. Research supported by the Aerospace Corp.

Astronomy and Astrophysics

Astrophysics

12

Critical Mass, Early Stars, O Stars, Red Giant Stars, Stellar Evolution, Stellar Mass Ejection, Abundance, Carbon, Helium, Main Sequence Stars, Nuclear Fusion, Stellar Luminosity, Stellar Mass, Wolf-Rayet Stars

Scientific paper

A critical mass-loss rate is discussed which, in the absence of binary mass transfer or extremely high mass-loss rates in the red-giant stage, determines whether a star will become a stripped core resembling a Wolf-Rayet star. Stars losing mass at this rate undergo two stages of N-14 enhancement, and result in models resembling first WN and later WC stars. The nucleosynthetic yield of a star undergoing mass loss is affected. The N-14 yield and C/O ratio are increased, and the helium/metal yield ratio is increased from 0.3 to as much as 3.0.

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