Understanding the Characteristics of EMP Stars as Probes for the Early Universe: Stellar Evolution of Low- and Intermediate-Mass EMP Stars

摘要

The information on surface abundances in extremely metal-poor (EMP) stars in the Galactic halo is a useful probe of the early universe. Therefore, it is very important to understand the modification of abundances in EMP stars by internal and/or external pollution through mixing processes and binary interactions in stellar evolution. We computed various sets of model stars for 0.8–9.0–M in mass and ?5< [Fe/H]