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

R. J. Jackson; R. D. Jeffries; N. J. Wright; S. Randich; G. Sacco; A. Bragaglia; A. Hourihane; E. Tognelli; S. Degl'innocenti; P. G. Prada Moroni; G. Gilmore; T. Bensby; E. Pancino; R. Smiljanic; M. Bergemann; G. Carraro; E. Franciosini; A. Gonneau; P. Jofré; J. Lewis; L. Magrini; L. Morbidelli; L. Prisinzano; C. Worley; S. Zaggia; G. Tautvaišiene; M. L. Gutiérrez Albarrán; D. Montes; F. Jiménez-Esteban

doi:10.1093/mnras/stab3032

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

R. J. Jackson, R. D. Jeffries, N. J. Wright, S. Randich, G. Sacco, A. Bragaglia, A. Hourihane, E. Tognelli, S. Degl'innocenti, P. G. Prada Moroni, G. Gilmore, T. Bensby, E. Pancino, R. Smiljanic, M. Bergemann, G. Carraro, E. Franciosini, A. Gonneau, P. Jofré, J. LewisL. Magrini, L. Morbidelli, L. Prisinzano, C. Worley, S. Zaggia, G. Tautvaišiene, M. L. Gutiérrez Albarrán, D. Montes, F. Jiménez-Esteban

Research output: Contribution to journal › Article › peer-review

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, 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.

Original language	English
Pages (from-to)	1664-1680
Number of pages	17
Journal	Monthly Notices of the Royal Astronomical Society
Volume	509
Issue number	2
DOIs	https://doi.org/10.1093/mnras/stab3032
Publication status	Published - 2022 Jan 1

Subject classification (UKÄ)

Astronomy, Astrophysics and Cosmology

Free keywords

evolution
general
open clusters and associations
pre-main-sequence
stars

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10.1093/mnras/stab3032

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Jackson, R. J., Jeffries, R. D., Wright, N. J., Randich, S., Sacco, G., Bragaglia, A., Hourihane, A., Tognelli, E., Degl'innocenti, S., Prada Moroni, P. G., Gilmore, G., Bensby, T., Pancino, E., Smiljanic, R., Bergemann, M., Carraro, G., Franciosini, E., Gonneau, A., Jofré, P., ... Jiménez-Esteban, F. (2022). The Gaia-ESO Survey: Membership probabilities for stars in 63 open and 7 globular clusters from 3D kinematics. Monthly Notices of the Royal Astronomical Society, 509(2), 1664-1680. https://doi.org/10.1093/mnras/stab3032

@article{0cbb9e9c98f54a98b19e41603fc2f654,

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

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, 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.",

keywords = "evolution, general, open clusters and associations, pre-main-sequence, stars",

author = "Jackson, {R. J.} and Jeffries, {R. D.} and Wright, {N. J.} and S. Randich and G. Sacco and A. Bragaglia and A. Hourihane and E. Tognelli and S. Degl'innocenti and {Prada Moroni}, {P. G.} and G. Gilmore and T. Bensby and E. Pancino and R. Smiljanic and M. Bergemann and G. Carraro and E. Franciosini and A. Gonneau and P. Jofr{\'e} and J. Lewis and L. Magrini and L. Morbidelli and L. Prisinzano and C. Worley and S. Zaggia and G. Tautvai{\v s}iene and {Guti{\'e}rrez Albarr{\'a}n}, {M. L.} and D. Montes and F. Jim{\'e}nez-Esteban",

note = "Publisher Copyright: {\textcopyright} 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.",

year = "2022",

month = jan,

day = "1",

doi = "10.1093/mnras/stab3032",

language = "English",

volume = "509",

pages = "1664--1680",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

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}

Jackson, RJ, Jeffries, RD, Wright, NJ, Randich, S, Sacco, G, Bragaglia, A, Hourihane, A, Tognelli, E, Degl'innocenti, S, Prada Moroni, PG, Gilmore, G, Bensby, T, Pancino, E, Smiljanic, R, Bergemann, M, Carraro, G, Franciosini, E, Gonneau, A, Jofré, P, Lewis, J, Magrini, L, Morbidelli, L, Prisinzano, L, Worley, C, Zaggia, S, Tautvaišiene, G, Gutiérrez Albarrán, ML, Montes, D & Jiménez-Esteban, F 2022, 'The Gaia-ESO Survey: Membership probabilities for stars in 63 open and 7 globular clusters from 3D kinematics', Monthly Notices of the Royal Astronomical Society, vol. 509, no. 2, pp. 1664-1680. https://doi.org/10.1093/mnras/stab3032

TY - JOUR

T1 - The Gaia-ESO Survey

T2 - Membership probabilities for stars in 63 open and 7 globular clusters from 3D kinematics

AU - Jackson, R. J.

AU - Jeffries, R. D.

AU - Wright, N. J.

AU - Randich, S.

AU - Sacco, G.

AU - Bragaglia, A.

AU - Hourihane, A.

AU - Tognelli, E.

AU - Degl'innocenti, S.

AU - Prada Moroni, P. G.

AU - Gilmore, G.

AU - Bensby, T.

AU - Pancino, E.

AU - Smiljanic, R.

AU - Bergemann, M.

AU - Carraro, G.

AU - Franciosini, E.

AU - Gonneau, A.

AU - Jofré, P.

AU - Lewis, J.

AU - Magrini, L.

AU - Morbidelli, L.

AU - Prisinzano, L.

AU - Worley, C.

AU - Zaggia, S.

AU - Tautvaišiene, G.

AU - Gutiérrez Albarrán, M. L.

AU - Montes, D.

AU - Jiménez-Esteban, F.

PY - 2022/1/1

Y1 - 2022/1/1

N2 - 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.

AB - 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.

KW - evolution

KW - general

KW - open clusters and associations

KW - pre-main-sequence

KW - stars

U2 - 10.1093/mnras/stab3032

DO - 10.1093/mnras/stab3032

M3 - Article

AN - SCOPUS:85121232264

SN - 0035-8711

VL - 509

SP - 1664

EP - 1680

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 2

ER -

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

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Subject classification (UKÄ)

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