Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

The Gaia-ESO Survey : Membership probabilities for stars in 63 open and 7 globular clusters from 3D kinematics

Jackson, R. J. ; Jeffries, R. D. ; Wright, N. J. ; Randich, S. ; Sacco, G. ; Bragaglia, A. ; Hourihane, A. ; Tognelli, E. ; Degl'innocenti, S. and Prada Moroni, P. G. , et al. (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)
Please use this url to cite or link to this publication:
author
; ; ; ; ; ; ; ; and , et al. (More)
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; and (Less)
organization
publishing date
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 &gt; 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}},
}