2 papers
astro-ph2001
On the helium flash in low-mass Population III Red Giant stars
H. Schlattl, S. Cassisi, M. Salaris +1
We investigate the evolution of initially metal-free, low-mass Red Giant stars through the He core flash at the tip of the Red Giant Branch. The low entropy barrier between the hel…
astro-ph1999
Evolution of low-mass metal-free stars including effects of diffusion and external pollution
A. Weiss, S. Cassisi, H. Schlattl +1
We investigate the evolution of low-mass metal-free Population III stars. Emphasis is laid upon the question of internal and external sources for CNO-elements, which - if present i…