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Investigation of the nearby open clusters with Gaia DR2 data

Published online by Cambridge University Press:  11 March 2020

Anton F. Seleznev Open the ORCID record for Anton F. Seleznev [Opens in a new window] ,
Vladimir M. Danilov  and
Giovanni Carraro
Anton F. Seleznev
Affiliation:
Kourovka Astronomical Observatory, Ural Federal University, 620000, Lenin ave. 51, Ekaterinburg, the Russian Federation emails: anton.seleznev@urfu.ru, vladimir.danilov@urfu.ru
Vladimir M. Danilov
Affiliation:
Kourovka Astronomical Observatory, Ural Federal University, 620000, Lenin ave. 51, Ekaterinburg, the Russian Federation emails: anton.seleznev@urfu.ru, vladimir.danilov@urfu.ru
Giovanni Carraro
Affiliation:
Dipartimento di Fisica Astronomia Galileo Galilei, Padova University, Vicolo Osservatorio 3, Padova, I-35122, Italy email: giovanni.carraro@unipd.it
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Abstract

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Gaia DR2 catalog provides a unique possibility to study the three-dimensional structure and the three-dimensional velocity field of the nearby open clusters. We can either select stars with a maximum membership probability and the most accurate values for the proper motions, parallaxes, and the radial velocities, or study these clusters statistically using overwhelmingly large areas of sky of tens by tens degrees. The second approach allows us to reveal the extensive outer parts of the clusters - a corona and the tidal tails and to study the luminosity and mass functions of these clusters. We present the first results of the investigation of several nearby open clusters, including Pleiades, Alpha Persei, Ruprecht 147.

Keywords

open clusters and associations: generalstars: kinematicsstars: luminosity functionmass function
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S351: Star Clusters: From the Milky Way to the Early Universe , May 2019 , pp. 502 - 506
Copyright
© International Astronomical Union 2020

References

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