J/ApJ/835/212ivo://CDS.VizieR/J/ApJ/835/212doi:10.26093/cds/vizier.18350212CDSKo Y.Hwang H.S.Lee M.G.Park H.S.Lim S.Sohn J.Jang I.S.,Hwang N.Park B.-G.2020-01-29T14:27:25Z2017-09-20T07:28:21ZCDS support team

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

cds-question@unistra.frgalaxy-clustersinfrared-photometryvisible-astronomybroad-band-photometryradial-velocityglobular-star-clustersWe present the results of a wide-field spectroscopic survey of globular clusters (GCs) in the Virgo cluster. We obtain spectra for 201 GCs and 55 ultracompact dwarfs (UCDs) using Hectospec on the Multiple-Mirror Telescope and derive their radial velocities. We identify 46 genuine intracluster GCs (IGCs), not associated with any Virgo galaxies, using the 3D GMM test on the spatial and radial velocity distribution. They are located at a projected distance 200kpc<~R<~500kpc from the center of M87. The radial velocity distribution of these IGCs shows two peaks, one at v_r_=1023km/s, associated with the Virgo main body, and another at v_r_=36km/s, associated with the infalling structure. The velocity dispersion of the IGCs in the Virgo main body is {sigma}_GC_~314km/s, which is smoothly connected to the velocity dispersion profile of M87 GCs but is much lower than that of dwarf galaxies in the same survey field, {sigma}_dwarf_~608km/s. The UCDs are more centrally concentrated on massive galaxies-M87, M86, and M84. The radial velocity dispersion of the UCD system is much smaller than that of dwarf galaxies. Our results confirm the large-scale distribution of Virgo IGCs indicated by previous photometric surveys. The color distribution of the confirmed IGCs shows a bimodality similar to that of M87 GCs. This indicates that most IGCs are stripped off dwarf galaxies and some off massive galaxies in the Virgo.2017ApJ...835..212Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/835/212CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)J/AJ/90/1681 : The Virgo Cluster Catalog (VCC) (Binggeli+, 1985)J/A+AS/139/393 : Young Massive Star Clusters. II. (Larsen, 1999)J/A+A/383/823 : Radial velocities of UCOs in Fornax (Mieske+, 2002)J/A+A/464/L21 : Velocities of globular clusters in Fornax (Bergond+, 2007)J/ApJ/655/144 : ACS Virgo Cluster Survey. XIII. (Mei+, 2007)J/A+A/477/L9 : Globular clusters around NGC 1399 (Schuberth+, 2008)J/MNRAS/396/1075 : GC in nearby dwarf galaxies. II (Georgiev+, 2009)J/ApJS/180/54 : GC candidates in ACS Virgo survey. (Jordan+, 2009)J/ApJS/182/216 : Surface photometry of Virgo ellipticals (Kormendy+, 2009)J/MNRAS/402/803 : M31 globular cluster system (Peacock+, 2010)J/A+A/513/A52 : Velocities of NGC 1399 globular clusters (Schuberth+, 2010)J/AJ/142/199 : Sizes and luminosities of stellar systems (Brodie+, 2011)J/A+A/531/A4 : Ultra compact dwarfs and globulars in Hya I (Misgeld+, 2011)J/ApJS/197/33 : The M87 globular cluster system (Strader+, 2011)J/ApJ/748/29 : Spectroscopy of M87 globular clusters (Romanowsky+, 2012)J/ApJS/215/22 : The Extended Virgo Cluster Catalog (EVCC) (Kim+, 2014)J/ApJ/802/30 : NGVS VI. Ultra-compact dwarfs in M87 (Zhang+, 2015)J/MNRAS/455/820 : M87 globular cluster candidates catalog (Oldham+, 2016)J/ApJS/227/12 : NGVS XXV. Virgo globular clusters photometry (Powalka+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/835/212https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/835/212http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/835/212https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/835/212https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/835/212http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/835/212GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/835/212/table2 (Spectroscopic and photometric properties of foreground stars and background galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/835/212/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/835/212/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/835/212/table2?GETtext/xml+votable180.050000true185.8486180612.998183060.005555555555555556Cone search capability for table J/ApJ/835/212/table4 (Spectroscopic and photometric properties of the combined ultracompact dwarf (UCD) sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/835/212/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/835/212/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/835/212/table4?GETtext/xml+votable180.050000true185.9190369412.211850.005555555555555556Cone search capability for table J/ApJ/835/212/table3 (Spectroscopic and photometric properties of the combined globular cluster (GC) sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/835/212/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/835/212/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/835/212/table3?GETtext/xml+votable180.050000true185.8727719413.161441110.0055555555555555565/6941 6/27743 27763 27772 27773 27936 27938 279442.4270961532559724e-19 2.8962881395294825e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/835/212?format=asciiOpticalInfrareddefaultJ/ApJ/835/212/table2Spectroscopic and photometric properties of foreground stars and background galaxiesS/G"STAR" or "GAL"meta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqRunning sequence number within S/G classmeta.id;meta.mainintRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainimag[17.1/21] CFHT/MegaCam i band AB magnitudemagphot.mag;em.opt.Ifloate_imag[0/0.007] Error in imagmagstat.error;phot.mag;em.opt.Ifloatg-r[0.3/1] The (g-r) color indexmagphot.color;em.opt.B;em.opt.Rfloate_g-rError in g-rmagstat.error;phot.color;em.opt.Bfloatg-i[0.6/1.7] The (g-i) color indexmagphot.color;em.opt.B;em.opt.Rfloate_g-iError in g-imagstat.errorfloatHRV[-295/240245] Heliocentric radial velocitykm/sspect.dopplerVeloc;pos.heliocentricinte_HRV[4/431] Error in HRVkm/sstat.errorintSloanDisplay the online SDSS data for the nearest objectmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/ApJ/835/212/table4Spectroscopic and photometric properties of the combined ultracompact dwarf (UCD) sampleSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDIdentification (1)meta.id;meta.maincharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainimag[17.5/22.3] i band AB magnitudemagphot.mag;em.opt.Ifloate_imag[0.001/0.02]? Error in imagmagstat.error;phot.mag;em.opt.Ifloatnullableg-r[0.4/0.8]? The (g-r) color indexmagphot.color;em.opt.B;em.opt.Rfloatnullablee_g-r? Error in g-rmagstat.error;phot.color;em.opt.Bfloatnullableg-i[0.6/1.2]? The (g-i) color indexmagphot.color;em.opt.B;em.opt.Rfloatnullablee_g-i? Error in g-imagstat.errorfloatnullabler_photSource of photometry (2)meta.ref;pos.framecharHRV[-416/2419] Heliocentric radial velocitykm/sspect.dopplerVeloc;pos.heliocentricinte_HRV[2/146] Error in HRVkm/sstat.errorintr_HRVSource of HRV (2)meta.ref;pos.framecharrh[0.6/40.2]? Half-light radiuspcphys.size.radiusfloatnullableE_rh[0/8.4]? Upper error in rhpcstat.error;stat.maxfloatnullablee_rh[0/8.4]? Lower error in rhpcstat.errorfloatnullabler_rh? Source of rh (2)meta.ref;pos.framecharMcl[A-C] Mclust subgroup that a given UCD belongs tometa.ucdcharrefCatDisplay data within 1" from Strader+, 2011, J/ApJS/197/33; Hanes+, 2001, J/ApJ/559/812; Zhang+, 2015, J/ApJ/802/30 and Jordan+, 2009, J/ApJS/180/54meta.ref.urlintnullableJ/ApJ/835/212/table3Spectroscopic and photometric properties of the combined globular cluster (GC) sampleSimbadNameSimbad column added by the CDSmeta.idcharr_rh? Source of rh (2)meta.ref;pos.framecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDIdentification (1)meta.id;meta.maincharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainimag[17.8/23.5] i band AB magnitudemagphot.mag;em.opt.Ifloate_imag[0.001/0.02]? Error in imagmagstat.error;phot.mag;em.opt.Ifloatnullableg-r[0.3/0.9]? The (g-r) color indexmagphot.color;em.opt.B;em.opt.Rfloatnullablee_g-r? Error in g-rmagstat.error;phot.color;em.opt.Bfloatnullableg-i[0.6/1.3]? The (g-i) color indexmagphot.color;em.opt.B;em.opt.Rfloatnullablee_g-i? Error in g-imagstat.errorfloatnullabler_photSource of photometry (2)meta.ref;pos.framecharHRV[-728/2777] Heliocentric radial velocitykm/sspect.dopplerVeloc;pos.heliocentricinte_HRV[5/114] Error in HRVkm/sstat.errorintr_HRVSource of HRV (2)meta.ref;pos.framecharrh[1.3/9.2]? Half-light radiuspcphys.size.radiusfloatnullableE_rh[0/1.5]? Upper error in rhpcstat.error;stat.maxfloatnullablee_rh[0/1.1]? Lower error in rhpcstat.errorfloatnullableGal1Host galaxy determined by Mclust method (3)meta.id.parentcharGal2Host galaxy determined by Rv cut methodmeta.id.parentcharrefCatDisplay data within 1" from Strader+, 2011, J/ApJS/197/33; Hanes+, 2001, J/ApJ/559/812; Zhang+, 2015, J/ApJ/802/30 and Jordan+, 2009, J/ApJS/180/54meta.ref.urlintnullable