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| Paper: |
The Fruity Database: Chemical Features of Low-Mass AGB Stars |
| Volume: |
445, Why Galaxies Care about AGB Stars II: Shining Examples and Common Inhabitants |
| Page: |
57 |
| Authors: |
Domínguez, I.; Cristallo, S.; Straniero, O.; Piersanti, L.; di Rico, G.; Gallino, R.; Abia, C. |
| Abstract: |
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☉ 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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