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Monash Chemical Yields Project (Monχey) Element production in low- and intermediate-mass stars

Published online by Cambridge University Press:  27 October 2016

Carolyn Doherty
Affiliation:
Monash Centre of Astrophysics
John Lattanzio
Affiliation:
Monash Centre of Astrophysics
George Angelou
Affiliation:
Max Planck Institut fur Sonnensystemforschung
Simon W. Campbell
Affiliation:
Monash Centre of Astrophysics
Ross Church
Affiliation:
Lund Observatory
Thomas Constantino
Affiliation:
Monash Centre of Astrophysics
Sergio Cristallo
Affiliation:
INAF-Osservatorio Astronomico di Collurania
Pilar Gil-Pons
Affiliation:
Polytechnical University of Catalonia
Amanda Karakas
Affiliation:
Research School of Astronomy and Astrophysics
Maria Lugaro
Affiliation:
Konkoly Observatory
Richard Stancliffe
Affiliation:
Argelander Institute for Astronomy
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Abstract

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The Monχey project will provide a large and homogeneous set of stellar yields for the low- and intermediate- mass stars and has applications particularly to galactic chemical evolution modelling. We describe our detailed grid of stellar evolutionary models and corresponding nucleosynthetic yields for stars of initial mass 0.8 M up to the limit for core collapse supernova (CC-SN) ≈ 10 M. Our study covers a broad range of metallicities, ranging from the first, primordial stars (Z = 0) to those of super-solar metallicity (Z = 0.04). The models are evolved from the zero-age main-sequence until the end of the asymptotic giant branch (AGB) and the nucleosynthesis calculations include all elements from H to Bi. A major innovation of our work is the first complete grid of heavy element nucleosynthetic predictions for primordial AGB stars as well as the inclusion of extra-mixing processes (in this case thermohaline) during the red giant branch. We provide a broad overview of our results with implications for galactic chemical evolution as well as highlight interesting results such as heavy element production in dredge-out events of super-AGB stars. We briefly introduce our forthcoming web-based database which provides the evolutionary tracks, structural properties, internal/surface nucleosynthetic compositions and stellar yields. Our web interface includes user- driven plotting capabilities with output available in a range of formats. Our nucleosynthetic results will be available for further use in post processing calculations for dust production yields.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2016 

References

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