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AGB stars in Gaia DR2

Published online by Cambridge University Press:  30 December 2019

Thomas Lebzelter Open the ORCID record for Thomas Lebzelter [Opens in a new window] ,
Nami Mowlavi ,
Paola Marigo ,
Isabelle Lecoeur-Taibi ,
Michele Trabucchi ,
Giada Pastorelli Open the ORCID record for Giada Pastorelli [Opens in a new window] ,
Peter Wood Open the ORCID record for Peter Wood [Opens in a new window]  and
Gaia Collaboration
Thomas Lebzelter
Affiliation:
Institut f. Astrophysik, University of ViennaTuerkenschanzstrasse 17, A1180 Vienna, Austria email: [email protected]
Nami Mowlavi
Affiliation:
Astronomy Department, University of Geneva, Switzerland email: [email protected]
Paola Marigo
Affiliation:
Dipartimento di Fisica e Astronomia Galileo Galilei, Universit^ di Padova, Italy
Isabelle Lecoeur-Taibi
Affiliation:
Astronomy Department, University of Geneva, Switzerland email: [email protected]
Michele Trabucchi
Affiliation:
Dipartimento di Fisica e Astronomia Galileo Galilei, Universit^ di Padova, Italy
Giada Pastorelli
Affiliation:
Dipartimento di Fisica e Astronomia Galileo Galilei, Universit^ di Padova, Italy
Peter Wood
Affiliation:
RSAA, Canberra, Australia
Rights & Permissions [Opens in a new window]

Abstract

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Gaia Data Release 2 (DR2; April 25, 2018) provides astrometric and photometric data for more than a billion stars - among them many AGB stars. As part of DR2 the light curves of several hundreds of thousand variable stars, including many long-period variable (LPV) candidates, are made available. The publication of the light curves and LPV-specific attributes in addition to the standard DR2 products offers a unique opportunity to study AGB stars. In this contribution, we present the first results for AGB stars based on the analysis of the Gaia data performed after their release. As an immediate result of the Gaia DR2 LPV database we introduce a new photometric index capable of efficiently distinguishing AGB stars of different masses and chemical properties.

Keywords

stars: variabilitystars: evolutionstars: AGB and post-AGB
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. 73 - 76
Copyright
© International Astronomical Union 2019 

References

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Marigo, P., Girardi, L., Bressan, A., et al. 2017, ApJ, 835, 77 CrossRefGoogle Scholar
Mowlavi, N., Lecoeur-Taibi, I., Lebzelter, T., et al. 2018, A&A, in pressGoogle ScholarPubMed
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