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The Gaia-ESO Survey...
The Gaia-ESO Survey : Membership probabilities for stars in 32 open clusters from 3D kinematics
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- Jackson, R. J. (author)
- Keele University
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- Jeffries, R. D. (author)
- Keele University
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- Wright, N. J. (author)
- Keele University
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- Randich, S. (author)
- INAF - Osservatorio Astrofisico di Arcetri
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- Sacco, G. (author)
- INAF - Osservatorio Astrofisico di Arcetri
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- Pancino, E. (author)
- INAF - Osservatorio Astrofisico di Arcetri
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- Cantat-Gaudin, T. (author)
- University of Barcelona
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- Gilmore, G. (author)
- University of Cambridge
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- Vallenari, A. (author)
- INAF - Osservatorio Astronomico di Padova
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- Bensby, T. (author)
- Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science
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- Bayo, A. (author)
- University of Valparaíso
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- Costado, M. T. (author)
- University of Cádiz
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- Franciosini, E. (author)
- INAF - Osservatorio Astrofisico di Arcetri
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- Gonneau, A. (author)
- University of Cambridge
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- Hourihane, A. (author)
- University of Cambridge
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- Lewis, J. (author)
- University of Cambridge
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- Monaco, L. (author)
- Andrés Bello National University
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- Morbidelli, L. (author)
- INAF - Osservatorio Astrofisico di Arcetri
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- Worley, C. (author)
- University of Cambridge
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(creator_code:org_t)
- 2020-06-19
- 2020
- English 16 s.
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In: Monthly Notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 496:4, s. 4701-4716
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Abstract
Subject headings
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- The Gaia-ESO Survey (GES) observed many open clusters as part of its programme to spectroscopically characterize the various Milky Way populations. GES spectroscopy and Gaia astrometry from its second data release are used here to assign membership probabilities to targets towards 32 open clusters with ages from 1 to 3800 Myr, based on maximum likelihood modelling of the 3D kinematics of the cluster and field populations. From a parent catalogue of 14 398 individual targets, 5032 stars with uniformly determined 3D velocities, Teff, log g, and chemistry are assigned cluster membership with probability >0.9, and with an average probability of 0.991. The robustness of the membership probabilities is demonstrated using independent membership criteria (lithium and parallax) in two of the youngest clusters. The addition of radial velocities improves membership discrimination over proper motion selection alone, especially in more distant clusters. The kinematically selected nature of the membership lists, independent of photometry and chemistry, makes the catalogue a valuable resource for testing stellar evolutionary models and investigating the time evolution of various parameters.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- Open clusters and associations: general
- Stars: evolution
- Stars: pre-main-sequence
Publication and Content Type
- art (subject category)
- ref (subject category)
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To the university's database
- By the author/editor
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Jackson, R. J.
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Jeffries, R. D.
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Wright, N. J.
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Randich, S.
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Sacco, G.
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Pancino, E.
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show more...
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Cantat-Gaudin, T ...
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Gilmore, G.
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Vallenari, A.
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Bensby, T.
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Bayo, A.
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Costado, M. T.
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Franciosini, E.
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Gonneau, A.
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Hourihane, A.
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Lewis, J.
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Monaco, L.
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Morbidelli, L.
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Worley, C.
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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Monthly Notices ...
- By the university
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Lund University