J/ApJ/773/L36ivo://CDS.VizieR/J/ApJ/773/L36doi:10.26093/cds/vizier.17739036CDSColucci J.E.Duran M.F.Bernstein R.A.McWilliam A.2017-06-30T05:49:27Z2015-03-23T10:51:27ZCDS support team

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

cds-question@unistra.frchemical-abundancesglobular-star-clustersgalaxiesradial-velocitygalaxy-kinematicsspectroscopyWe present [Fe/H], ages, and Ca abundances for an initial sample of 10 globular clusters in NGC 5128 obtained from high-resolution, high signal-to-noise ratio echelle spectra of their integrated light. All abundances and ages are obtained using our original technique for high-resolution integrated light abundance analysis of globular clusters. The clusters have a range in [Fe/H] between -1.6 and -0.2. In this sample, the average [Ca/Fe] for clusters with [Fe/H]<-0.4 is +0.37+/-0.07, while the average [Ca/Fe] in our Milky Way (MW) and M31 GC samples is +0.29+/-0.09 and +0.24+/-0.10, respectively. This may imply a more rapid chemical enrichment history for NGC 5128 than for either the MW or M31. This sample provides the first quantitative picture of the chemical history of NGC 5128 that is directly comparable to what is available for the MW. Data presented here were obtained with the MIKE echelle spectrograph on the Magellan Clay Telescope.2013ApJ...773L..36Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/773/L36CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/143/84 : New candidate globular clusters in NGC 5128 (Harris+, 2012)J/ApJ/708/1335 : Spectroscopy of globulars in NGC 5128 (Woodley+, 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/705/1533 : NGC 5128 globular clusters (Chattopadhyay+, 2009)J/ApJ/704/385 : M31 integrated light abundances (Colucci+, 2009)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/AJ/134/494 : NGC 5128 GCs UBVRICMT1 phot. + RV (Woodley+, 2007)J/AJ/132/2187 : MCT1 photometry of NGC 5128 globular clusters (Harris+, 2006)J/AJ/130/2140 : Abundances and velocities in globular clusters (Pritzl+, 2005)J/ApJS/150/367 : Globular clusters in NGC 5128 (Peng+, 2004)J/A+A/369/812 : UVKs phot. of globular clusters in NGC 5128 (Rejkuba, 2001)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/773/L36https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/773/L36http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/773/L36https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/773/L36https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/773/L36http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/773/L36GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/773/L36/gcdata (Observations and globular cluster properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/773/L36/gcdata?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/773/L36/gcdata?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/773/L36/gcdata?GETtext/xml+votable180.050000true201.1625-43.3351110.0055555555555555566/432623.322582951404819e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/773/L36?format=asciiOpticaldefaultJ/ApJ/773/L36/gcdataObservations and globular cluster propertiesRgc[3.6/23.1]? Projected galactocentric radius from NGC 5128 (G1)kpcpos.distancefloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintP04Name from Peng et al. 2004 (1)meta.idcharGCGlobular cluster ID in Woodley et al. 2007 (G1)meta.id;meta.mainintRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainVmag[17.1/18.7]? V-band magnitude from P04 (1)magphot.mag;em.opt.Vfloatnullable[M/H][-1.6/-0.2]? [M/H] metallicity value of Beasley et al. 2008 (J/MNRAS/386/1443)phys.abund.Zfloatnullable[Z/H][-0.7/1]? [Z/H] metallicity value by W10 (2)phys.abund.Zfloatnullable[a/Fe][-0.1/0.3]? [{alpha}/Fe] metallicity value by W10 (2)phys.abundfloatnullableVr[363/782]? Radial velocity from W07 (G1)km/sspect.dopplerVelocintnullablee_Vr[1/34]? Vr uncertaintykm/sstat.errorintnullableVs[13/24]? Line-of-sight velocity dispersion (v_{sigma}_) measured by Taylor et al. (2010ApJ...712.1191T)km/sphys.veloc.dispersionfloatnullablee_Vs[1/3]? Vs uncertaintykm/sstat.errorfloatnullableDateMonth and year of the multi-night observing runtime.epochnullableExp[5/16.6]? Exposure timehtime.duration;obs.exposurefloatnullableS/N[38/81]? 604nm signal to noise ratiostat.snrintnullableNCatCross-match within 3" with NGC 5128 GC catalogs (Beasley et al. 2008, J/MNRAS/386/1443 and Woodley et al. 2010, J/ApJ/708/1335)meta.ref.urlintnullableAbundDisplay the integrated light abundances from table 2meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharNEDSimbad column added by the CDSmeta.ref.urlcharAge1Lower range of ageGyrtime.age;stat.minintAge2Upper range of ageGyrtime.age;stat.maxint[Fe/H][-1.7/-0.2] Metallicitylog(Sun)phys.abund.ZfloatNFe[16/37] Number of FeI lines analyzedmeta.numberintsigN[0.04/0.3] Standard deviation of the mean abundance ({sigma}_N_)stat.stdevfloatsigFe[0.03/0.2] Error in the mean abundance (3)log(Sun)stat.error;phys.abundfloatsigAge[0.02/0.1] Systematic age uncertainty {sigma}_Age_ in quadraturestat.error;phys.abundfloatsigT[0.04/0.2] Total uncertainty on the [Fe/H] (3)stat.error;phys.abundfloatAtm[A/S] Kurucz {alpha}-enhanced (A) or scaled-solar atmosphere (S) (4)meta.codechar[Ca/Fe][0.03/0.5] [Ca/Fe] abundancelog(Sun)phys.abundfloatNCa[3/11] Number of CaI lines analyzedmeta.numberintsigCa[0.05/0.2] Error in the mean measured CaI abundancelog(Sun)stat.error;phys.abundfloatVsig[10/21] Line-of-sight velocity dispersion of the GC (V_{sigma}_) (5)km/sphys.veloc.dispersionfloate_Vsig[0.2/1.3] Vsig uncertaintykm/sstat.errorfloatHRV[363/784] Heliocentric corrected radial velocitykm/sspect.dopplerVeloc;pos.heliocentricfloate_HRV[0.2/1.6] HRV uncertaintykm/sstat.errorfloatJ/ApJ/773/L36/table2Line parameters and GC integrated light (IL) abundancesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonSpecies identifier (CaI or FeI)phys.atmol.ionStagecharlambda[4369.7/7531.2] Wavelength; in Angstroms0.1nmem.wldoubleExPot[0/4.8] Excitation potentialeVphys.atmol.excitationfloatlog(gf)[-4.9/0.7] Log of the oscillator strengthphys.atmol.oscStrengthfloatGC0040? Abundance (log{epsilon}) in GC0040phys.abundfloatnullableGC0041? Abundance (log{epsilon}) in GC0041phys.abundfloatnullableGC0086? Abundance (log{epsilon}) in GC0086phys.abundfloatnullableGC0106? Abundance (log{epsilon}) in GC0106phys.abundfloatnullableGC0124? Abundance (log{epsilon}) in GC0124phys.abundfloatnullableGC0227? Abundance (log{epsilon}) in GC0227phys.abundfloatnullableGC0265? Abundance (log{epsilon}) in GC0265phys.abundfloatnullableGC0277? Abundance (log{epsilon}) in GC0277phys.abundfloatnullableGC0282? Abundance (log{epsilon}) in GC0282phys.abundfloatnullableGC0365? Abundance (log{epsilon}) in GC0365phys.abundfloatnullable