CNO abundance determination in massive fast rotating stars

Details CNO abundance determination in massive fast rotating stars CNO abundance determination in massive fast rotating stars

Aug 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008rmxac..33...53f&link_type=abstract

Massive Stars: Fundamental Parameters and Circumstellar Interactions (Eds. P. Benaglia, G. L. Bosch, & C. E. Cappa) Revista Mexi

Astronomy and Astrophysics

Astronomy

Stars: Atmospheres, Stars: Fundamental Parameters

Scientific paper

Be stars are early-type Main Sequence objects which have shown at least once some emission in the hydrogen line series. Their most important characteristic is fast rotation, which on average reach ˜ 90% of the critical rate, i.e. Ω/Ω_{c} %˜ 0.90. Since a number of them have masses M > 15 M_&sun;, they are ideal targets to study the effects of rotational mixing on the atmospheric CNO abundance and to perform comparisons with the predictions obtained from recent evolutionary models with rotation.

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