A new case for strong main sequence core overshooting

Details A new case for strong main sequence core overshooting A new case for strong main sequence core overshooting

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...243l...5n&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 243, no. 1, March 1991, p. L5-L8. DFG-supported research.

Astronomy and Astrophysics

Astrophysics

30

Galactic Clusters, Main Sequence Stars, Open Clusters, Stellar Evolution, Stellar Models, Blue Stars, Stellar Atmospheres, Stellar Mass, Stellar Spectra

Scientific paper

A careful determination of effective temperatures and surface gravities of the brightest members of the galacitic cluster NGC 2301 by means of model atmospheres and optical/UV spectrograms is presented. By comparison with evolutionary stellar tracks in the log T(eff)-log g plane it is found that the main sequence phase extends far beyond the limit predicted by the classical stellar models. Instead, only calculations which assume considerable overshoot in the convective stellar cores are consistent with the analysis.

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