Core-overshooting at the He-flash and the colours of horizontal branch stars

Details Core-overshooting at the He-flash and the colours of horizontal branch stars Core-overshooting at the He-flash and the colours of horizontal branch stars

Mar 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982mnras.198..861c&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 198, Mar. 1982, p. 861-864.

Astronomy and Astrophysics

Astronomy

5

Helium, Horizontal Branch Stars, Stellar Envelopes, Stellar Evolution, Stellar Luminosity, Carbon, Cores, Hertzsprung-Russell Diagram, Stellar Models, Stellar Structure, Stellar Temperature, Surface Temperature

Scientific paper

It is suggested that fresh carbon mixed into H-rich layers by overshooting during the He-flash may play a role in the expected evolutionary behavior of HB stars, with respect to both the location on the HR diagram of newborn stars of this type and their evolutionary path. The range of surface temperatures covered during HB evolution under this hypothesis is greatly increased, and a bimodal distribution may be attained.

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