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AGB stars in Gaia DR2

Published online by Cambridge University Press:  30 December 2019

Thomas Lebzelter
Affiliation:
Institut f. Astrophysik, University of ViennaTuerkenschanzstrasse 17, A1180 Vienna, Austria email: thomas.lebzelter@univie.ac.at
Nami Mowlavi
Affiliation:
Astronomy Department, University of Geneva, Switzerland email: Nami.Mowlavi@unige.ch
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: Nami.Mowlavi@unige.ch
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
Corresponding
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Abstract

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.

Type
Contributed Papers
Copyright
© International Astronomical Union 2019 

References

Gaia Collaboration, Brown, A.G.A., van Leeuwen, F., et al. 2018, A&A, 616, A1 Google Scholar
Ita, Y., Tanabe, T., Matsunaga, N., et al. 2004, MNRAS, 353, 705 CrossRefGoogle Scholar
Lebzelter, T., Mowlavi, N., Marigo, P., et al. 2018, A&A, 616, L13 Google Scholar
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
Soszyński, I., Udalski, A., Szymański, M.K., et al. 2009, AcA, 59, 239 Google Scholar
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