ATTENZIONE!!! IL SISTEMA E' UTILIZZABILE ESCLUSIVAMENTE IN MODALITA' "CONSULTAZIONE". CAUSA PROBLEMI TECNICI, SI PREGA DI NON EFFETTUARE L'AUTENTICAZIONE, FINO A NUOVA COMUNICAZIONE. GRAZIE
 

The Gaia-ESO Survey: Kinematics of seven Galactic globular clusters

Journal
Date Issued
2015
Author(s)
Lardo, C.
•
•
•
•
•
Gilmore, G.
•
•
Feltzing, S.
•
Jeffries, R. D.
•
•
Alfaro, E. J.
•
Allende Prieto, C.
•
•
Koposov, S. E.
•
Recio-Blanco, A.
•
Bergemann, M.
•
Carraro, G.
•
Costado, M. T.
•
•
Hourihane, A.
•
Jofré, P.
•
de Laverny, P.
•
Marconi, G.
•
Masseron, T.
•
•
•
Worley, C. C.
DOI
Description
We thank the referee, N. Martin, for the careful reading of the manuscript and for the useful comments and suggestions that helped to improve the quality of the paper significantly. We acknowledge the support from INAF and Ministero dell’ Istruzione, dell’ Università e della Ricerca (MIUR) in the form of the grants “Premiale VLT 2012” and “The Chemical and Dynamical Evolution of the Milky Way and Local Group Galaxies” (prot. 2010LY5N2T). P.d.L. and A.R.B. acknowledge the support of French Agence Nationale de la Recherche, under contract ANR-2010-BLAN-0508-01OTP, and the Programme National de Cosmologie et Galaxies. This work was partly supported by the European Union FP7 programme through ERC grant number 320360 and by the Leverhulme Trust through grant RPG-2012-541. The results presented here benefit from discussions held during the Gaia -ESO workshops and conferences supported by the ESF (European Science Foundation) through the GREAT Research Network Programme. This research has made extensive use of NASA’s Astrophysics Data System Bibliographic Services, and of the SIMBAD database and VizieR catalogue access tool, CDS, Strasbourg, France.
Abstract
The Gaia-ESO survey is a large public spectroscopic survey aimed at investigating the origin and formation history of our Galaxy by collecting spectroscopy of representative samples (about 105 Milky Way stars) of all Galactic stellar populations, in the field and in clusters. The survey uses globular clusters as intra- and inter-survey calibrators, deriving stellar atmospheric parameters and abundances of a significant number of stars in clusters, along with radial velocity determinations. We used precise radial velocities of a large number of stars in seven globular clusters (NGC 1851, NGC 2808, NGC 4372, NGC 4833, NGC 5927, NGC 6752, and NGC 7078) to validate pipeline results and to preliminarily investigate the cluster internal kinematics. Radial velocity measurements were extracted from FLAMES/GIRAFFE spectra processed by the survey pipeline as part of the second internal data release of data products to ESO. We complemented our sample with ESO archival data obtained with different instrument configurations. Reliable radial velocity measurements for 1513 bona fide cluster star members were obtained in total. We measured systemic rotation, estimated central velocity dispersions, and present velocity dispersion profiles of all the selected clusters, providing the first velocity dispersion curve and the first estimate of the central velocitydispersion for the cluster NGC 5927. Finally, we explore the possible link between cluster kinematics and other physical parameters. The analysis we present here demonstrates that Gaia-ESO survey data are sufficiently accurate to be used in studies of kinematics of stellar systems and stellar populations in the Milky Way.

Full Table 3 is only available at the CDS via anonymous ftp to http://cdsarc.u-strasbg.fr (ftp://130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/573/A115Based on data products from observations made with ESO telescopes at the La Silla Paranal Observatory under programme 188.B-3002 (the public Gaia-ESO spectroscopic survey, PIs Gilmore & Randich) and on the archive data of the programmes 62.N-0236, 63.L-0439, 65.L-0561, 68.D-0212, 68.D-0265, 69.D-0582, 064.L-0255, 065.L-0463, 071.D-0205, 073.D-0211, 073.D-0695, 075.D-0492, 077.D-0246, 077.D-0652, 079.D-0645, 080.B-0489, 080.D-0106, 081.D-0253, 082.B-0386, 083.B-0083, 083.D-0208, 083.D-0798, 085.D-0205, 086.D-0141, 088.A-9012, 088.B-0403, 088.B-0492, 088.D-0026, 088.D-0519, 089.D-0038, 164.O-0561, 386.D-0086.

Volume
573
Start page
A115
Uri
Url
Issn Identifier
0004-6361
Ads BibCode
2015A&A...573A.115L
Rights
open.access
File(s)
Loading...
Thumbnail Image
Name

aa25036-14.pdf

Size

3.49 MB

Format

Adobe PDF

Checksum (MD5)

77fae52686b3689cc2b9c993d73eb42c