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"Not too old" metal deficient stellar populations: the case of metallicity Z=0.00001

S. Cassisi·M. Castellani·V. Castellani
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Abstract

We investigate the evolution of metal deficient stellar structures, presenting H-burning isochrones covering cluster ages from 800 Myr to 7 Gyr. Evolutionary evidences for selection effects in the metallicity distribution of very metal poor H-burning red giants are reported. The evolution of stars during central and shell He burning is further investigated, discussing the occurrence of He burning pulsators as a function of cluster age.

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S. Cassisi, M. Castellani, V. Castellani. 1996-03-06. "Not too old" metal deficient stellar populations: the case of metallicity Z=0.00001. https://arxiv.org/abs/astro-ph/9603023

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