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Characterisation of long-period variables in the Magellanic Clouds

Published online by Cambridge University Press:  30 December 2019

Michele Trabucchi Open the ORCID record for Michele Trabucchi [Opens in a new window] ,
Peter R. Wood ,
Josefina Montalbán ,
Paola Marigo ,
Giada Pastorelli  and
Léo Girardi Open the ORCID record for Léo Girardi [Opens in a new window]
Michele Trabucchi
Affiliation:
Dipartimento di Fisica e Astronomia Galileo Galilei, Universitá di Padova, Vicolo dell’Osservatorio 3, I-35122 Padova, Italy email: [email protected]
Peter R. Wood
Affiliation:
Research School of Astronomy and Astrophysics, Australian National University, Canberra, ACT2611, Australia
Josefina Montalbán
Affiliation:
Dipartimento di Fisica e Astronomia Galileo Galilei, Universitá di Padova, Vicolo dell’Osservatorio 3, I-35122 Padova, Italy email: [email protected]
Paola Marigo
Affiliation:
Dipartimento di Fisica e Astronomia Galileo Galilei, Universitá di Padova, Vicolo dell’Osservatorio 3, I-35122 Padova, Italy email: [email protected]
Giada Pastorelli
Affiliation:
Dipartimento di Fisica e Astronomia Galileo Galilei, Universitá di Padova, Vicolo dell’Osservatorio 3, I-35122 Padova, Italy email: [email protected]
Léo Girardi
Affiliation:
Dipartimento di Fisica e Astronomia Galileo Galilei, Universitá di Padova, Vicolo dell’Osservatorio 3, I-35122 Padova, Italy email: [email protected] Astronomical Observatory of Padova–INAF, Vicolo dell’Osservatorio 3, I-35122 Padova, Italy
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Abstract

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Variability due to stellar pulsation on the Asymptotic Giant Branch (AGB) has a great potential for applications such as distance measurements, the study the evolution of stars and galaxies, and the estimate of global stellar parameters, as well as to constrain stellar evolutionary models. Given the importance of long-period variables (LPVs) in this sense, and given the lack of recent, updated sets of pulsation models, we computed an extended grid of pulsation models widely covering the space of AGB stellar parameters, including up-to-date opacities and accounting for the chemical evolution associated with third dredge-up events. We present the relevant properties of this grid and discuss the main results it allowed to obtain in terms of the interpretation of the observed properties of LPVs in the Large Magellanic Cloud (LMC).

Keywords

stars: AGB and post-AGBstars: variables: otherMagellanic Clouds
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S343: Why Galaxies Care About AGB Stars: A Continuing Challenge through Cosmic Time , August 2018 , pp. 301 - 304
Copyright
© International Astronomical Union 2019 

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