The Gaia-ESO Survey : Membership probabilities for stars in 63 open and 7 globular clusters from 3D kinematics
(2022) In Monthly Notices of the Royal Astronomical Society 509(2). p.1664-1680- Abstract
Spectroscopy from the final internal data release of the Gaia-ESO Survey (GES) has been combined with Gaia EDR3 to assign membership probabilities to targets observed towards 63 Galactic open clusters and 7 globular clusters. The membership probabilities are based chiefly on maxim likelihood modelling of the 3D kinematics of the targets, separating them into cluster and field populations. From 43 211 observed targets, 13 985 are identified as highly probable cluster members (P > 0.9), with an average membership probability of 0.993. The addition of GES radial velocities successfully drives down the fraction of false positives and we achieve better levels of discrimination in most clusters over the use of astrometric data alone,... (More)
Spectroscopy from the final internal data release of the Gaia-ESO Survey (GES) has been combined with Gaia EDR3 to assign membership probabilities to targets observed towards 63 Galactic open clusters and 7 globular clusters. The membership probabilities are based chiefly on maxim likelihood modelling of the 3D kinematics of the targets, separating them into cluster and field populations. From 43 211 observed targets, 13 985 are identified as highly probable cluster members (P > 0.9), with an average membership probability of 0.993. The addition of GES radial velocities successfully drives down the fraction of false positives and we achieve better levels of discrimination in most clusters over the use of astrometric data alone, especially those at larger distances. Since the membership selection is almost purely kinematic, the union of this catalogue with GES and Gaia is ideal for investigating the photometric and chemical properties of clusters as a function of stellar mass, age, and Galactic position.
(Less)
- author
- organization
- publishing date
- 2022-01-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- evolution, general, open clusters and associations, pre-main-sequence, stars
- in
- Monthly Notices of the Royal Astronomical Society
- volume
- 509
- issue
- 2
- pages
- 17 pages
- publisher
- Oxford University Press
- external identifiers
-
- scopus:85121232264
- ISSN
- 0035-8711
- DOI
- 10.1093/mnras/stab3032
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.
- id
- 0cbb9e9c-98f5-4a98-b19e-41603fc2f654
- date added to LUP
- 2022-01-26 14:47:31
- date last changed
- 2024-04-20 19:30:19
@article{0cbb9e9c-98f5-4a98-b19e-41603fc2f654, abstract = {{<p>Spectroscopy from the final internal data release of the Gaia-ESO Survey (GES) has been combined with Gaia EDR3 to assign membership probabilities to targets observed towards 63 Galactic open clusters and 7 globular clusters. The membership probabilities are based chiefly on maxim likelihood modelling of the 3D kinematics of the targets, separating them into cluster and field populations. From 43 211 observed targets, 13 985 are identified as highly probable cluster members (P > 0.9), with an average membership probability of 0.993. The addition of GES radial velocities successfully drives down the fraction of false positives and we achieve better levels of discrimination in most clusters over the use of astrometric data alone, especially those at larger distances. Since the membership selection is almost purely kinematic, the union of this catalogue with GES and Gaia is ideal for investigating the photometric and chemical properties of clusters as a function of stellar mass, age, and Galactic position.</p>}}, author = {{Jackson, R. J. and Jeffries, R. D. and Wright, N. J. and Randich, S. and Sacco, G. and Bragaglia, A. and Hourihane, A. and Tognelli, E. and Degl'innocenti, S. and Prada Moroni, P. G. and Gilmore, G. and Bensby, T. and Pancino, E. and Smiljanic, R. and Bergemann, M. and Carraro, G. and Franciosini, E. and Gonneau, A. and Jofré, P. and Lewis, J. and Magrini, L. and Morbidelli, L. and Prisinzano, L. and Worley, C. and Zaggia, S. and Tautvaišiene, G. and Gutiérrez Albarrán, M. L. and Montes, D. and Jiménez-Esteban, F.}}, issn = {{0035-8711}}, keywords = {{evolution; general; open clusters and associations; pre-main-sequence; stars}}, language = {{eng}}, month = {{01}}, number = {{2}}, pages = {{1664--1680}}, publisher = {{Oxford University Press}}, series = {{Monthly Notices of the Royal Astronomical Society}}, title = {{The Gaia-ESO Survey : Membership probabilities for stars in 63 open and 7 globular clusters from 3D kinematics}}, url = {{http://dx.doi.org/10.1093/mnras/stab3032}}, doi = {{10.1093/mnras/stab3032}}, volume = {{509}}, year = {{2022}}, }