Oxygen isotopic abundances in evolved stars. II - Eight MS and S stars

Details Oxygen isotopic abundances in evolved stars. II - Eight MS and S stars Oxygen isotopic abundances in evolved stars. II - Eight MS and S stars

Dec 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...299..375h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 299, Dec. 1, 1985, p. 375-385. Research supported by the Robert A. Welch Fo

Astronomy and Astrophysics

Astrophysics

48

Abundance, Late Stars, M Stars, Oxygen Isotopes, S Stars, Stellar Evolution, Asymptotic Giant Branch Stars, Nuclear Fusion, Stellar Cores, Stellar Envelopes, Stellar Temperature

Scientific paper

Oxygen isotope ratios have been measured in five MS stars, two S stars, and the slightly s-process-rich M giant 30 Her. Both the 16O/17O and 16O/18O ratios are found to be much larger than expected from stellar evolution theories. Both 16O/17O and 16O/18O are found to correlate well with the abundance of 12C and with the degree of neutron exposure necessary to explain the s-process element abundances. These correlations cannot be explained by current theoretical models of AGB stars, nor by simple modifications of these models. Explosive nucleosynthesis in the envelope at extremely high temperatures during the helium core flash is tentatively proposed to explain them.

Affiliated with

Also associated with

No associations

Rating

Oxygen isotopic abundances in evolved stars. II - Eight MS and S stars 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 Oxygen isotopic abundances in evolved stars. II - Eight MS and S stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oxygen isotopic abundances in evolved stars. II - Eight MS and S stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1160193