Nucleosynthesis: Stellar and Solar Abundances and Atomic Data

Details Nucleosynthesis: Stellar and Solar Abundances and Atomic Data Nucleosynthesis: Stellar and Solar Abundances and Atomic Data

2006-05-04

arxiv.org/abs/astro-ph/0605137v1

Astronomy and Astrophysics

Astrophysics

8 pages, 2 figures, 1 table. To appear in the Proceedings of the NASA Laboratory Astrophysics Workshop in Las Vegas, NV (Febru

Scientific paper

Abundance observations indicate the presence of often surprisingly large amounts of neutron capture (i.e., s- and r-process) elements in old Galactic halo and globular cluster stars. These observations provide insight into the nature of the earliest generations of stars in the Galaxy -- the progenitors of the halo stars -- responsible for neutron-capture synthesis. Comparisons of abundance trends can be used to understand the chemical evolution of the Galaxy and the nature of heavy element nucleosynthesis. In addition age determinations, based upon long-lived radioactive nuclei abundances, can now be obtained. These stellar abundance determinations depend critically upon atomic data. Improved laboratory transition probabilities have been recently obtained for a number of elements. These new gf values have been used to greatly refine the abundances of neutron-capture elemental abundances in the solar photosphere and in very metal-poor Galactic halo stars. The newly determined stellar abundances are surprisingly consistent with a (relative) Solar System r-process pattern, and are also consistent with abundance predictions expected from such neutron-capture nucleosynthesis.

Affiliated with

Also associated with

No associations

Rating

Nucleosynthesis: Stellar and Solar Abundances and Atomic Data 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 Nucleosynthesis: Stellar and Solar Abundances and Atomic Data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nucleosynthesis: Stellar and Solar Abundances and Atomic Data will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-608106