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New PARSEC database of alpha enhanced stellar evolutionary tracks and isochrones for Gaia

Published online by Cambridge University Press:  27 October 2016

Xiaoting Fu ,
Alessandro Bressan ,
Paola Marigo ,
Léo Girardi ,
Josefina Montalban ,
Yang Chen ,
Ambra Nanni  and
Antonio Lanza
Xiaoting Fu
Affiliation:
SISSA - International School for Advanced Studies, via Bonomea 265, 34136 Trieste, Italy email: [email protected]
Alessandro Bressan
Affiliation:
SISSA - International School for Advanced Studies, via Bonomea 265, 34136 Trieste, Italy email: [email protected]
Paola Marigo
Affiliation:
Dipartimento di Fisica e Astronomia Galileo Galilei, Università di Padova, Vicolo dell'Osservatorio 3, I-35122 Padova, Italy
Léo Girardi
Affiliation:
INAF - Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, I-35122 Padova, Italy
Josefina Montalban
Affiliation:
Dipartimento di Fisica e Astronomia Galileo Galilei, Università di Padova, Vicolo dell'Osservatorio 3, I-35122 Padova, Italy
Yang Chen
Affiliation:
SISSA - International School for Advanced Studies, via Bonomea 265, 34136 Trieste, Italy email: [email protected] Department of Astronomy, University of Science and Technology of China, Hefei 230026, Anhui, China
Ambra Nanni
Affiliation:
Dipartimento di Fisica e Astronomia Galileo Galilei, Università di Padova, Vicolo dell'Osservatorio 3, I-35122 Padova, Italy
Antonio Lanza
Affiliation:
SISSA - International School for Advanced Studies, via Bonomea 265, 34136 Trieste, Italy email: [email protected]
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Abstract

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We present a new database of alpha enhanced evolutionary tracks and isochrones, computed with PARSEC (the PAdova & TRieste Stellar Evolution Code). The new isochrones are tested against Color-Magnitude Diagrams of well studied Globular Clusters, tacking into account multiple population effects. They are also compared with observations of dwarf stars in the Solar vicinity. After these preliminary computations, we will provide the full sets of isochrones with chemical compositions suitable for Globular Clusters and Bulge stars, that will be fully implemented into galaxy simulators. We will also provide new models suitable for the analysis of unresolved stellar populations in early type galaxies.

Keywords

stars: evolutionstars: Hertzsprung-Russell diagramstars: low-massstars: interiorsstars: abundances
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , General Assembly A29B: Astronomy in Focus , August 2015 , pp. 144 - 146
Copyright
Copyright © International Astronomical Union 2016 

References

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