Other
Scientific paper
Mar 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ssrv...66..127l&link_type=abstract
Space Science Reviews, Volume 66, Issue 1-4, pp. 127-135
Other
19
B-Supergiants, Abundances, Evolution
Scientific paper
We present new estimates of He/H and CNO abundance ratios in the atmospheres of a selection of B2 supergiants which imply that the C/N ratio in the most luminous Ia stars is close to its equilibrium value. The is also some evidence for more moderate CN abundance anomalies in the B2Ib and B2II supergiants. These results, together with other recent work, imply that the effects of the CNO bi-cycle on the composition of B-supergiant atmospheres are most severe for the more luminous and massive stars. Furthermore, studies of LMC B-supergiants indicate that a small fraction of these very luminous stars are nitrogen weak. This picture is qualitatively consistent with theoretical predictions whenever massive stars perform blue loops in the HR diagram, returning from a red supergiant phase to become core helium burning blue supergiants with atmospheres contaminated by nuclear processed material.
No associations
LandOfFree
The chemical composition of B-supergiant atmospheres 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 The chemical composition of B-supergiant atmospheres, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The chemical composition of B-supergiant atmospheres will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1707915