Abundances of massive stars: some recent developments

Details Abundances of massive stars: some recent developments Abundances of massive stars: some recent developments

2008-11-25

arxiv.org/abs/0811.4114v1

Astronomy and Astrophysics

Astrophysics

Invited review presented at 'Evolution and Pulsation of Massive Stars on the Main Sequence and Close to it' (Liege, July 2008)

Scientific paper

Thanks to their usefulness in various fields of astrophysics (e.g. mixing processes in stars, chemical evolution of galaxies), the last few years have witnessed a large increase in the amount of abundance data for early-type stars. Two intriguing results emerging since the last reviews on this topic will be discussed: (a) nearby OB stars exhibit metal abundances generally lower than the solar/meteoritic estimates; (b) evolutionary models of single objects including rotation are largely unsuccessful in explaining the CNO properties of stars in the Galaxy and in the Magellanic clouds.

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