J/ApJ/950/138ivo://CDS.VizieR/J/ApJ/950/138CDSPallanca C.Leanza S.Ferraro F.R.Lanzoni B.Dalessandro E.,Cadelano M.Vesperini E.Origlia L.Mucciarelli A.Valenti E.,Miola A.2025-10-01T06:29:29Z2025-09-05T09:48:46ZCDS support team

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

cds-question@unistra.frglobular-star-clustersradial-velocityhst-photometryinfrared-astronomyspectroscopyvisible-astronomyapparent-magnitudesurveysIn the context of a project aimed at characterizing the properties of star clusters in the Galactic bulge, here we present the determination of the internal kinematics and structure of the massive globular cluster NGC 6569. The kinematics has been studied by means of an unprecedented spectroscopic data set acquired in the context of the ESO-VLT Multi-Instrument Kinematic Survey of Galactic globular clusters, combining the observations from four different spectrographs. We measured the line-of-sight velocity of a sample of almost 1300 stars distributed between ~0.8" and 770" from the cluster center. From a subsample of high-quality measures, we determined the velocity dispersion profile of the system over its entire radial extension (from ~5" to ~200" from the center), finding the characteristic behavior usually observed in globular clusters, with a constant inner plateau and a declining trend at larger radii. The projected density profile of the cluster has been obtained from resolved star counts, by combining high-resolution photometric data in the center, and the Gaia EDR3 catalog radially extended out to ~20'for a proper sampling of the Galactic field background. The two profiles are properly reproduced by the same King model, from which we estimated updated values of the central velocity dispersion, main structural parameters (such as the King concentration, the core, half mass, and tidal radii), total mass, and relaxation times. Our analysis also reveals a hint of ordered rotation in an intermediate region of the cluster (40"<r<90", corresponding to 2r_c_<r<4.5r_c_), but additional data are required to properly assess this possibility.2023ApJ...950..138Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/950/138CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/350 : Gaia EDR3 (Gaia Collaboration, 2020)VII/195 : Globular Clusters in the Milky Way (Harris, 1996)VII/202 : Globular Clusters in the Milky Way (Harris, 1997)VII/233 : 2MASS All-Sky Extended Source Catalog (XSC) (IPAC/UMass, 2003-2006)J/ApJS/161/304 : Star clusters in the MW and satellites (McLaughlin+, 2005)J/MNRAS/361/272 : JHKs phot. of 4 Bulge globular clusters (Valenti+, 2005)J/A+A/450/105 : Properties of 153 Galactic globular clusters (Bica+, 2006)J/AJ/131/2114 : Radial velocities in Fornax dSph (Walker+, 2006)J/MNRAS/380/281 : Faint galactic satellites sp. survey (Martin+, 2007)J/AJ/133/1287 : JHK phot. of 24 Galactic globular clusters (Valenti+, 2007)J/MNRAS/396/2183 : RVels of red giants in {omega} Cen (Sollima+ 2009)J/MNRAS/402/1729 : JHK phot. of 36 Galactic globular clusters (Valenti+ 2010)J/ApJ/726/L20 : Spectroscopy of Terzan 5 (Origlia+, 2011)J/ApJ/769/107 : RVs and [Fe/H] of star members of NGC 6388 (Lanzoni+, 2013)J/ApJ/795/22 : Iron abundance of Terzan 5 stars (Massari+, 2014)J/ApJ/798/23 : Rvels of giant stars in NGC 6388 (Lapenna+, 2015)J/MNRAS/478/1520 : Milky Way globular clusters data (Baumgardt+, 2018)J/AJ/155/71 : Members of the bulge cluster NGC 6569 (Johnson+, 2018)J/ApJ/861/99 : HSTPROMO cat. VI. Analysis of NGC362 (Libralato+, 2018)J/MNRAS/505/5978 : Gaia EDR3 view on Gal. globular clusters (Vasiliev+, 2021)http://www.cosmic-lab.eu/Cosmic-Lab/MIKiS_Survey.html : The MIKiS Survey ofhttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/950/138https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/950/138http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/950/138https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/950/138https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/950/138http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/950/138GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/950/138/table4 (*kinematic catalog of the quality selected stars (S/N>15 and RV error <5km/s) in NGC 6569)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/950/138/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/950/138/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/950/138/table4?GETtext/xml+votable180.050000true273.4090654-31.82652920.0055555555555555566/28768-287697.952274030004205e-20 4.293000657289493e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/950/138?format=asciiOpticalInfrareddefaultJ/ApJ/950/138/table4*kinematic catalog of the quality selected stars (S/N>15 and RV error <5km/s) in NGC 6569recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/1073] Sequential identifier used in this workmeta.id;meta.mainintRA_ICRS[273.2/273.7] Right Ascension (ICRS) at Epoch=2016.0degpos.eq.ra;meta.mainDE_ICRS[-32.1/-31.6] Declination (ICRS) at Epoch=2016.0degpos.eq.dec;meta.mainF555Wm[14.8/21.14]? HST/WFC3 F555W (Vega) magnitudemagphot.mag;em.opt.VfloatnullableF814Wm[12.4/19.8]? HST/WFC3 F814W (Vega) magnitudemagphot.mag;em.opt.IfloatnullableJmag[9.4/18.8]? Gemini/GeMS J band (Vega) magnitudemagphot.mag;em.IR.JfloatnullableKsmag[8/14.8]? Gemini/GeMS K_s_ band (Vega) magnitudemagphot.mag;em.IR.KfloatnullableRVel[-233/228] MIKiS Survey radial (line of sight) velocitykm/sspect.dopplerVelocfloate_RVel[0.2/5] Uncertainty in RVelkm/sstat.error;spect.dopplerVelocfloat