4562111
doi
10.5281/zenodo.4562111
oai:zenodo.org:4562111
user-coolstars20half
Wolk, Scott
Dias, Wilton
Universidade Federal de Itajubá
Properties of Open Clusters With Gaia DR2
Monteiro, Hektor
Universidade Federal de Itajubá
info:eu-repo/semantics/openAccess
Creative Commons Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/legalcode
Stellar systems, clusters, and associations
<p>Reliable fundamental parameters of open clusters such as distance, age and extinction are key to our understanding of Galactic structure and stellar evolution. In this work we present recent results for open clusters investigated using Gaia DR2 data. Cluster memberships were determined using a maximum likelihood method applied to {\it Gaia} DR2 astrometry as well as from other authors and methods from the literature. This has allowed us to estimate mean proper motions and mean parallaxes for thousands of investigated clusters. Mean radial velocities were also determined for 47% of the clusters, many of which had no previous published values. We have improved our isochrone fitting code to account for interstellar extinction using an updated extinction polynomial for the Gaia DR2 photometric band-passes. A Galactic abundance gradient has also been introduced as a prior for metallicity along with an A<sub>V</sub> prior based on the 3D structure of the Local Galaxy. The updated procedure was validated with a sample of clusters with high quality [Fe/H] determinations. A critical review of the literature shows that our cluster parameter determinations represent a substantial improvement in fundamental parameter estimates. In this work we present general statistics of the sample such as the distribution of properties relative to height from the Galactic plane.</p>
Zenodo
2021-02-25
info:eu-repo/semantics/conferencePoster
4562110
user-coolstars20half
1614299250.09101
243516
md5:c593e563ba8a2a4bc1cf4f147d0c5a11
https://zenodo.org/records/4562111/files/poster-thumbnail.png
859577
md5:697585993c688b44ec33e0ccc19e8e99
https://zenodo.org/records/4562111/files/Poster-CoolStars-2021.pdf
public
10.5281/zenodo.4562110
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doi