J/ApJ/947/34ivo://CDS.VizieR/J/ApJ/947/34doi:10.26093/cds/vizier.19470034CDSHughes A.K.Sand D.J.Seth A.Strader J.Lidman C.Voggel K.,Dumont A.Crnojevic D.Mateo M.Caldwell N.Forbes D.A.Pearson S.,Guhathakurta P.Toloba E.2025-08-11T20:15:06Z2025-05-30T07:40:31ZCDS support team

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

cds-question@unistra.frglobular-star-clustersgalaxiesradial-velocityvisible-astronomyspectroscopyphotometrytwo-color-diagramsWe present new radial velocity measurements from the Magellan and the Anglo-Australian Telescopes for 175 previously known and 121 newly confirmed globular clusters (GCs) around NGC 5128, the nearest accessible massive early-type galaxy at D=3.8Mpc. Remarkably, 28 of these newly confirmed GCs are at projected radii >50' (>~54kpc), extending to ~130kpc, in the outer halo where few GCs had been confirmed in previous work. We identify several subsets of GCs that spatially trace halo substructures that are visible in red giant branch star maps of the galaxy. In some cases, these subsets of GCs are kinematically cold, and may be directly associated with and originate from these specific stellar substructures. From a combined kinematic sample of 645 GCs, we see evidence for coherent rotation at all radii, with a higher rotation amplitude for the metal-rich GC subpopulation. Using the tracer mass estimator, we measure a total enclosed mass of 2.5+/-0.3x10^12^M_{sun}_ within ~120kpc, an estimate that will be sharpened with forthcoming dynamical modeling. The combined power of stellar mapping and GC kinematics makes NGC 5128 an ongoing keystone for understanding galaxy assembly at mass scales inaccessible in the Local Group.2023ApJ...947...34Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/947/34CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/449/592 : NGC 5128 PN. III. (Hui+ 1995)J/A+A/369/812 : UVKs phot. of globular clusters in NGC 5128 (Rejkuba, 2001)J/ApJ/591/850 : Radial velocities of M49 globular clusters (Cote+, 2003)J/AJ/128/723 : Washington Photometry in NGC 5128. II (Harris+, 2004)J/ApJ/600/716 : NGC 5128 Chandra X-ray point sources (Minniti+, 2004)J/ApJS/150/367 : Globular clusters in NGC 5128 (Peng+, 2004)J/ApJ/602/685 : NGC 5128 planetary nebulae (Peng+, 2004)J/AJ/132/2187 : MCT1 phot. of NGC 5128 globular clusters (Harris+, 2006)J/AJ/133/504 : Gal. around CenA/M83 galaxy complex (Karachentsev+, 2007)J/AJ/134/494 : NGC 5128 GCs UBVRICMT1 phot. & RV (Woodley+, 2007)J/MNRAS/386/1443 : 2dF study of globular clusters in NGC 5128 (Beasley+, 2008)J/ApJ/682/199 : Globulars with X-ray sources in NGC 5128 (Woodley+, 2008)J/MNRAS/396/1075 : Globular cluster in nearby dwarf gal. II (Georgiev+, 2009)J/A+A/513/A52 : Velocities of NGC 1399 globular clusters (Schuberth+, 2010)J/AJ/140/2101 : NGC 5128 globular clusters photometry (Sinnott+, 2010)J/AJ/139/1871 : Kinematics of globulars in NGC 5128 (Woodley+, 2010)J/ApJ/708/1335 : Spectroscopy of globulars in NGC 5128 (Woodley+, 2010)J/AJ/141/61 : Star clusters in M31. II. (Caldwell+, 2011)J/MNRAS/416/155 : GCs in five early-type galaxies (Faifer+, 2011)J/AJ/143/84 : New candidate globular clusters in NGC 5128 (Harris+, 2012)J/ApJ/748/29 : Spectroscopy of M87 globular clusters (Romanowsky+, 2012)J/A+A/544/A115 : Velocities of NGC 4636 globular clusters (Schuberth+, 2012)J/AJ/149/53 : RVels of 12 Milky Way globular clusters (Kimmig+, 2015)J/ApJ/805/65 : FLAMES obs. of NGC 5128's globular clusters (Taylor+, 2015)J/MNRAS/448/2717 : Bayesian analysis of resolved stellar sp. (Walker+, 2015)J/ApJ/802/30 : NGVS VI. Ultra-compact dwarfs in M87 (Zhang+, 2015)J/ApJ/824/42 : Star clusters in M31. VII. GCs RVs (Caldwell+, 2016)J/AJ/153/114 : GCs in 27 nearby ETGs from the SLUGGS survey (Forbes+, 2017)J/MNRAS/469/3444 : Centaurus A's Baryonic Structures II. (Taylor+, 2017)J/ApJ/899/140 : Gaia Ultracompact Dwarf galaxy candidates (Voggel+, 2020)J/ApJ/914/16 : NGC 5128 GCs from PISCes, Gaia DR2 and NSC (Hughes+, 2021)J/A+A/645/A92 : Dwarf spheroidal galaxies in CenA group (Mueller+, 2021)J/A+A/657/A93 : Fornax globular clusters (Chaturvedi+, 2022)J/ApJ/929/147 : Luminous globular clusters in NGC 5128 (Dumont+, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/947/34https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/947/34http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/947/34https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/947/34https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/947/34http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/947/34GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/947/34/table3 (Radial velocity measurements of previously known globular clusters (GCs) in NGC 5128)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/947/34/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/947/34/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/947/34/table3?GETtext/xml+votable180.050000true200.50859-42.535330.005555555555555556Cone search capability for table J/ApJ/947/34/table4 (Radial velocity measurements of newly confirmed GCs in NGC 5128)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/947/34/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/947/34/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/947/34/table4?GETtext/xml+votable180.050000true199.7071-43.499760.005555555555555556Cone search capability for table J/ApJ/947/34/table5 (Foreground stars and background galaxies in the vicinity of NGC 5128)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/947/34/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/947/34/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/947/34/table5?GETtext/xml+votable180.050000true199.13075-43.575040.0055555555555555565/10815 10901 6/43254-43255 43257 43259 43426 43432 43434 43601 43603 43612-43613 43776https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/947/34?format=asciiOpticaldefaultJ/ApJ/947/34/table3Radial velocity measurements of previously known globular clusters (GCs) in NGC 5128recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDThe H21/22 identifier (G1)meta.id;meta.maincharRAJ2000[200.5/202.6] Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[-43.8/-42] Declination (J2000)degpos.eq.dec;meta.maingmag[17.6/22.7] Apparent g band AB magnitudemagphot.mag;em.opt.Bfloatrmag[16.9/21.9] Apparent r band AB magnitudemagphot.mag;em.opt.Rfloatg-r0[0.03/1.01] Intrinsic (g-r) colormagphot.color;em.opt.B;em.opt.Rfloatu-z0[1/3.6]? Intrinsic (u-z) colormagphot.color;em.opt.U;em.opt.IfloatnullableRVel1[102/878]? Magellan/M2FS radial velocitykm/sspect.dopplerVelocintnullablee_RVel1[14/112]? Uncertainty in RVel1km/sstat.error;spect.dopplerVelocintnullableRVel2[254/893]? AAT/AAOmega radial velocitykm/sspect.dopplerVelocintnullablee_RVel2[10/29]? Uncertainty in RVel2km/sstat.error;spect.dopplerVelocintnullableWRVel[102/901] Weighted radial velocitykm/sstat.weight;spect.dopplerVelocinte_WRVel[0/76] Uncertainty in WRVelkm/sstat.error;stat.weight;spect.dopplerVelocintRefRadial velocity reference code(s) (1)meta.bibcharH21Display data from Hughes+ 2021, J/ApJ/914/16meta.ref.urlintnullableSimbadNameSimbad column added by the CDSmeta.idcharnullableJ/ApJ/947/34/table4Radial velocity measurements of newly confirmed GCs in NGC 5128recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDThe H21/22 identifier (G1)meta.id;meta.maincharRAJ2000[199.7/204] Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[-44.6/-41.5] Declination (J2000)degpos.eq.dec;meta.maingmag[18.3/22.2] Apparent g band AB magnitudemagphot.mag;em.opt.Bfloatrmag[17.86/21.1] Apparent r band AB magnitudemagphot.mag;em.opt.Rfloatg-r0[0.24/1.71] Intrinsic (g-r) colormagphot.color;em.opt.B;em.opt.Rfloatu-z0[1.5/3.5]? Intrinsic (u-z) colormagphot.color;em.opt.U;em.opt.IfloatnullableRVel1[286/905]? Magellan/M2FS radial velocitykm/sspect.dopplerVelocintnullablee_RVel1[14/122]? Uncertainty in RVel1km/sstat.error;spect.dopplerVelocintnullableRVel2[257/758]? AAT/AAOmega radial velocitykm/sspect.dopplerVelocintnullablee_RVel2[12/23]? Uncertainty in RVel2km/sstat.error;spect.dopplerVelocintnullableH21Display data from Hughes+ 2021, J/ApJ/914/16meta.ref.urlintnullableJ/ApJ/947/34/table5Foreground stars and background galaxies in the vicinity of NGC 5128H21Display data from Hughes+ 2021, J/ApJ/914/16meta.ref.urlintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDThe H21/22 identifier (G1)meta.id;meta.maincharRAJ2000[199/204.1] Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[-44.8/-40.9] Declination (J2000)degpos.eq.dec;meta.maingmag[17.14/23.1]? Apparent g band AB magnitudemagphot.mag;em.opt.Bfloatnullablermag[16.59/21.6]? Apparent r band AB magnitudemagphot.mag;em.opt.RfloatnullableWRVel[-418/3571] Weighted radial velocitykm/sstat.weight;spect.dopplerVelocinte_WRVel[0/123] Uncertainty in WRVelkm/sstat.error;stat.weight;spect.dopplerVelocintTypeSource type ("star": 662 occurrences; or "galaxy":12 occurrences)src.class.starGalaxychar