Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aspc..425...89y&link_type=abstract
Hot and Cool: Bridging Gaps in Massive Star Evolution ASP Conference Series Vol. 425, Proceedings of a Workshop held at the Cali
Astronomy and Astrophysics
Astronomy
Scientific paper
We discuss implications of the most up-to-date mass loss rate of Wolf-Rayet stars for Type Ib/c supernovae (SNe Ib/c). According to recent evolutionary models, final masses of Wolf-Rayet stars originating from mass-losing single stars at solar metallicity are larger than about 10 Msun, which is most likely to result in black-hole formation without producing a bright supernova. This indicates that the majority of the observed Type Ib/c supernovae should originate from massive binary stars in close orbits. We present new evolutionary models of massive binary stars and mass-losing helium stars, and discuss key properties of SNe Ib/c progenitors. Compared to the previous models of Woosley, Langer & Weaver and Wellstein & Langer, our new models predict large amounts of helium in the envelope, presence of thin hydrogen layers for a certain range of progenitor masses, and large stellar radii at the pre-supernova stage. This result should have important consequences for SNe Ib/c light curves and spectra, and shock-breakouts.
No associations
LandOfFree
Progenitor Stars of Type Ib/c Supernovae in Close Binary Systems 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 Progenitor Stars of Type Ib/c Supernovae in Close Binary Systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Progenitor Stars of Type Ib/c Supernovae in Close Binary Systems will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-835464