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Characterisation of long-period variables in the Magellanic Clouds

Published online by Cambridge University Press:  30 December 2019

Michele Trabucchi
Affiliation:
Dipartimento di Fisica e Astronomia Galileo Galilei, Universitá di Padova, Vicolo dell’Osservatorio 3, I-35122 Padova, Italy email: michele.trabucchi@unipd.it
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: michele.trabucchi@unipd.it
Paola Marigo
Affiliation:
Dipartimento di Fisica e Astronomia Galileo Galilei, Universitá di Padova, Vicolo dell’Osservatorio 3, I-35122 Padova, Italy email: michele.trabucchi@unipd.it
Giada Pastorelli
Affiliation:
Dipartimento di Fisica e Astronomia Galileo Galilei, Universitá di Padova, Vicolo dell’Osservatorio 3, I-35122 Padova, Italy email: michele.trabucchi@unipd.it
Léo Girardi
Affiliation:
Dipartimento di Fisica e Astronomia Galileo Galilei, Universitá di Padova, Vicolo dell’Osservatorio 3, I-35122 Padova, Italy email: michele.trabucchi@unipd.it 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).

Type
Contributed Papers
Copyright
© International Astronomical Union 2019 

References

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