s- and r-process elements in two very metal-poor stars

Details s- and r-process elements in two very metal-poor stars s- and r-process elements in two very metal-poor stars

2000-08-28

arxiv.org/abs/astro-ph/0008423v1

Astronomy and Astrophysics

Astrophysics

10 pages, 3 figures. Proc. Torino-Melbourne-Pasadena "Wasserburg" Workshop, U. Torino, 21-22 June 2000. For publication in Mem

Scientific paper

New measurements of neutron-capture elements are presented for two very metal-poor stars ([Fe/H] ~ -3). One (LP 625-44) has an s-process signature believed to be due to mass transfer from a now-extinct metal-poor AGB companion, and the second (CS 22897-008) is one of a number of very metal-poor stars having high [Sr/Ba] ratios which is not expected from the r-process. In the s-process star, many elements including lead have been detected, providing strong constraints on the 13C pocket in the now-extinct AGB star. In the Sr-rich star, Zn, Y, and Zr are also seen to be overabundant, and several possible nucleosynthesis mechanisms are discussed.

Affiliated with

Also associated with

No associations

Rating

s- and r-process elements in two very metal-poor 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 s- and r-process elements in two very metal-poor stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and s- and r-process elements in two very metal-poor stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-691315