Population nucleosynthesis in single and binary stars. I. Model

Details Population nucleosynthesis in single and binary stars. I. Model Population nucleosynthesis in single and binary stars. I. Model

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006a%26a...460..565i&link_type=abstract

Astronomy and Astrophysics, Volume 460, Issue 2, December III 2006, pp.565-572

Astronomy and Astrophysics

Astrophysics

32

Stars: Abundances, Stars: Agb And Post-Agb, Stars: Binaries: General, Stars: Chemically Peculiar, Stars: Carbon, Stars: Wolf-Rayet

Scientific paper

We present a synthetic algorithm to rapidly calculate nucleosynthetic yields from populations of single and binary stars for use in population synthesis, globular cluster and Galactic chemical evolution simulations. Single star nucleosynthesis is fitted directly to full evolution models and our model includes first, second and third dredge-ups with s-process enhancements, an analytic calculation for hot-bottom burning of CNO, NeNa and MgAl isotopes, surface enhancements due to wind loss in massive stars and core-collapse supernova yields. Even though this algorithm operates about 107 times faster than full evolution and nucleosynthesis calculations, agreement with such models is good. We extend the single star model to include prescriptions of binary star interactions, notably mass loss and gain by stellar winds and Roche-lobe overflow, novae and type Ia supernovae. As examples of the application of our algorithm we present models of some interesting systems containing chemically peculiar stars that may occur in binaries.

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