S-process-enriched cool stars with and without technetium - Clues to asymptotic giant branch and binary star evolution

Details S-process-enriched cool stars with and without technetium - Clues to asymptotic giant branch and binary star evolution S-process-enriched cool stars with and without technetium - Clues to asymptotic giant branch and binary star evolution

Oct 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...333..219s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 333, Oct. 1, 1988, p. 219-226. Research supported by the Robert A. Welch Fo

Astronomy and Astrophysics

Astrophysics

56

Asymptotic Giant Branch Stars, Binary Stars, Cool Stars, Stellar Composition, Stellar Evolution, Technetium, Barium, M Stars, S Stars, Stellar Atmospheres, Stellar Spectra

Scientific paper

High-resolution spectra at λ4260 have been obtained for 40 stars of type MS or S to search for the presence of Tc I. In addition, previously published Tc surveys provide an additional 18 stars for a total sample of 58 MS or S stars. Most of these stars have also been observed in Zr I, Y II, La II, and Nd II lines. These stars show general s-process abundance enhancements. Of the total sample, 38% of these s-process-enriched stars do not show Tc. The authors suggest that the MS and S stars are composed of two major groups: (1) Tc-containing stars which are currently thermally pulsing AGB stars undergoing third dredge-up and (2) Tc-poor stars which represent the coolest members of the barium star class, where s-process enrichment is probably the result of binary mass transfer in the past.

Affiliated with

Also associated with

No associations

Rating

S-process-enriched cool stars with and without technetium - Clues to asymptotic giant branch and binary star evolution 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 S-process-enriched cool stars with and without technetium - Clues to asymptotic giant branch and binary star evolution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and S-process-enriched cool stars with and without technetium - Clues to asymptotic giant branch and binary star evolution will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1598086