Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-01-30
Astronomy and Astrophysics
Astrophysics
12 pages, 11 figures, to be published by CUP, F. Bresolin, P.A. Crowther, J. Puls Eds
Scientific paper
10.1017/S1743921308020292
Some useful developments in the model physics are briefly presented, followed by model results on chemical enrichments and WR stars. We discuss the expected rotation velocities of WR stars. We emphasize that the (C+O)/He ratio is a better chemical indicator of evolution for WC stars than the C/He ratios. With or without rotation, at a given luminosity the (C+O)/He ratios should be higher in regions of lower metallicity Z. Also, for a given (C+O)/He ratio the WC stars in lower Z regions have higher luminosities. The WO stars, which are likely the progenitors of supernovae SNIc and of some GRBs, should preferentially be found in regions of low Z and be the descendants of very high initial masses. Finally, we emphasize the physical reasons why massive rotating low Z stars may also experience heavy mass loss
Ekstrom Sylvia
Georgy Cyril
Hirschi Raphael
Maeder Andre
Meynet Georges
No associations
LandOfFree
Massive Stars as Cosmic Engines through the Ages does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Massive Stars as Cosmic Engines through the Ages, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Massive Stars as Cosmic Engines through the Ages will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-122138