SIMBAD references

2019A&A...623A.108B - Astronomy and Astrophysics, volume 623A, 108-108 (2019/3-1)

Age determination for 269 Gaia DR2 open clusters.

BOSSINI D., VALLENARI A., BRAGAGLIA A., CANTAT-GAUDIN T., SORDO R., BALAGUER-NUNEZ L., JORDI C., MOITINHO A., SOUBIRAN C., CASAMIQUELA L., CARRERA R. and HEITER U.

Abstract (from CDS):


Context. The Gaia Second Data Release provides precise astrometry and photometry for more than 1.3 billion sources. This catalog opens a new era concerning the characterization of open clusters and test stellar models, paving the way for better understanding of the disk properties.
Aims. The aim of the paper is to improve the knowledge of cluster parameters, using only the unprecedented quality of the Gaia photometry and astrometry.
Methods. We have made use of the membership determination based on the precise Gaia astrometry and photometry. We applied an automated Bayesian tool, BASE-9, to fit stellar isochrones on the observed G, GBP, GRP magnitudes of the high probability member stars.
Results. We derive parameters such as age, distance modulus, and extinction for a sample of 269 open clusters, selecting only low reddening objects and discarding very young clusters, for which techniques other than isochrone-fitting are more suitable for estimating ages.

Abstract Copyright: © ESO 2019

Journal keyword(s): methods: statistical - open clusters and associations: general - Galaxy: stellar content - catalogs

VizieR on-line data: <Available at CDS (J/A+A/623/A108): tablea.dat>

Status at CDS : All or part of tables of objects will be ingested in SIMBAD with priority 1.

Simbad objects: 266

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2020.12.05-23:15:42

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