The Fruity Database: Chemical Features of Low-Mass AGB Stars

Details The Fruity Database: Chemical Features of Low-Mass AGB Stars The Fruity Database: Chemical Features of Low-Mass AGB Stars

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aspc..445...57d&link_type=abstract

Why Galaxies Care about AGB Stars II: Shining Examples and Common Inhabitants. Proceedings of a conference held at University Ca

Astronomy and Astrophysics

Astronomy

Scientific paper

Low-mass AGB stars play a fundamental role in the chemical evolution of the Universe. Their envelopes, enriched in both light (carbon, fluorine, sodium) and heavy (s-process) elements produced in their interiors, experience strong mass-loss episodes. Up to now, no complete set of isotopic tables and yields of low-mass AGB stars involving all chemical species (from hydrogen to lead) has been available. We present FRUITY (Franec Repository of Updated Isotopic Tables & Yields): a web-based database including all the chemical features of low-mass AGB-star theoretical models. Currently the database contains stellar models with initial masses between 1.5 and 3 M&sun; and initial metallicities from Z = 0.001 to Z = 0.02. Among the most recent updates of our calculations, we highlight the self-consistent formation of the 13C pocket (the major neutron source in these objects), the coupling of the code with a full s-process nuclear network, and the introduction of C-enhanced low temperature opacities. We test our theoretical results by comparing with the observed abundance index [hs/ls] in AGB stars at different metallicities.

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