Low-Metallicity Lead Stars: Comparison between Theory and Observations

Details Low-Metallicity Lead Stars: Comparison between Theory and Observations Low-Metallicity Lead Stars: Comparison between Theory and Observations

Jul 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aipc..847..368b&link_type=abstract

ORIGIN OF MATTER AND EVOLUTION OF GALAXIES: International Symposium on Origin of Matter and Evolution of Galaxies 2005: New Hori

Astronomy and Astrophysics

Astrophysics

4

Population Ii Stars, Abundances, Chemical Composition

Scientific paper

We compare AGB theoretical models with spectroscopic abundances of a sample of very metal-poor, C-rich, s-rich and lead-rich stars observed at high-resolution spectroscopy. Fits are obtained for AGB models with different 13C-pocket efficiencies and initial masses. The two intrinsic indicators, [hs/ls] and [Pb/hs] versus [Fe/H], are analyzed. An extended analysis of all the observed elements is made, outlining apparent discrepancies for a few elements. The analysis of C and N abundances strengthen the need of a strong cool bottom process occurring during the AGB. A significant number of these stars are both s-enriched and r-enriched. For them, the envelope abundances are predicted by mass transfer from the more massive AGB companion in a binary system from a parental cloud already enriched in r-elements.

Affiliated with

Also associated with

No associations

Rating

Low-Metallicity Lead Stars: Comparison between Theory and Observations 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 Low-Metallicity Lead Stars: Comparison between Theory and Observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low-Metallicity Lead Stars: Comparison between Theory and Observations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1136793