J/AJ/149/53ivo://CDS.VizieR/J/AJ/149/53doi:10.26093/cds/vizier.51490053CDSKimmig B.Seth A.Ivans I.I.Strader J.Caldwell N.Anderton T.,Gregersen D.2017-10-09T13:34:23Z2015-04-15T09:18:08ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frmilky-way-galaxyglobular-star-clustersradial-velocityWe present central velocity dispersions, masses, mass-to-light ratios (M/Ls), and rotation strengths for 25 Galactic globular clusters (GCs). We derive radial velocities of 1951 stars in 12 GCs from single order spectra taken with Hectochelle on the MMT telescope. To this sample we add an analysis of available archival data of individual stars. For the full set of data we fit King models to derive consistent dynamical parameters for the clusters. We find good agreement between single-mass King models and the observed radial dispersion profiles. The large, uniform sample of dynamical masses we derive enables us to examine trends of M/L with cluster mass and metallicity. The overall values of M/L and the trends with mass and metallicity are consistent with existing measurements from a large sample of M31 clusters. This includes a clear trend of increasing M/L with cluster mass and lower than expected M/Ls for the metal-rich clusters. We find no clear trend of increasing rotation with increasing cluster metallicity suggested in previous work.2015AJ....149...53Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/149/53CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/271 : Properties of Galactic Globular Clusters (Francis+, 2014)VII/202 : Globular Clusters in the Milky Way (Harris, 1997)J/A+A/557/A138 : Detailed chemical abundances in the NGC 362 (Carretta+ 2013)J/A+A/549/A41 : Horizontal branch stars in 47 Tuc and M5 (Gratton+, 2013)J/A+A/530/A31 : Stellar parameters in 10 globular cluster fields (Lane+, 2011)J/A+A/520/A95 : Abundances of red giants in M54 and Sgr dSph (Carretta+, 2010)J/AJ/137/94 : Star clusters in M31 (Caldwell+, 2009)J/A+A/464/953 : Abundances of red giants in NGC 6441 (Gratton+, 2007)J/A+A/464/939 : Abundances of red giants in NGC 6218 (Carretta+, 2007)J/A+A/464/927 : Abundances of red giants in NGC 6752 (Carretta+, 2007)J/AJ/133/1041 : Velocities and CMT2 photometry in M92 (Drukier+, 2007)J/ApJS/161/304 : Star clusters in the MW and satellites (McLaughlin+, 2005)J/AJ/115/708 : Radial Velocities in the Field of M15 (Drukier+ 1998)J/A+A/324/505 : Core velocity dispersions of globular clusters (Dubath+ 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/149/53https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/149/53http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/149/53https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/149/53https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/149/53http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/149/53GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/149/53/table5 (Hectochelle velocities)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/149/53/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/149/53/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/149/53/table5?GETtext/xml+votable180.050000true264.5535-3.11322220.0055555555555555565/2236 2238 2580 2581 2582 7760 6/8948 8950 9664 9666 10319 10336 10337 10338 10352 12405 12407 12425 12427 12428 12941 12943 19091 19100 27973 27975 27981 27984 27986 27992 28066 28067 28073 31411 31416 31417https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/149/53?format=asciiOpticaldefaultJ/AJ/149/53/table1Observational informationDateDate of observationtime.epochnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNcNumber of observations in this clustermeta.numberintnullableClusterName of the globular cluster (G1)meta.id;meta.maincharprimaryNobs[13/204] Number of stars observedmeta.numberintNexp[2/5] Number of exposuresmeta.numberintExp[1200/3600] Exposure timestime.duration;obs.exposureintN*? Number of unique stars observedmeta.numberintnullableNtid? Number of stars inside the tidal radius (1)meta.numberintnullableSimbadSimbad column added by the CDSmeta.ref.urlcharJ/AJ/149/53/table5Hectochelle velocitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClusterName of the globular cluster (G1)meta.id.parentcharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainRV[-791/746] Radial velocitykm/sphys.veloc;pos.heliocentricfloate_RV[0.02/568] Error in RVkm/sstat.errorfloat