J/ApJ/704/385ivo://CDS.VizieR/J/ApJ/704/385doi:10.26093/cds/vizier.17040385CDSColucci J.E.Bernstein R.A.Cameron S.McWilliam A.Cohen J.G.2017-10-18T08:25:06Z2011-11-21T12:53:50ZCDS support team

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

cds-question@unistra.frchemical-abundancesglobular-star-clustersline-intensitiesspectroscopyWe report the first detailed chemical abundances for five globular clusters (GCs) in M31 from high-resolution (R~25000) spectroscopy of their integrated light (IL). These GCs are the first in a larger set of clusters observed as part of an ongoing project to study the formation history of M31 and its GC population. The data presented here were obtained with the HIRES echelle spectrograph on the Keck I telescope and are analyzed using a new IL spectra analysis method that we have developed. In these clusters, we measure abundances for Mg, Al, Si, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Y, and Ba, ages >=10Gyr, and a range in [Fe/H] of -0.9 to -2.2. As is typical of Milky Way GCs, we find these M31 GCs to be enhanced in the {alpha}-elements Ca, Si, and Ti relative to Fe.2009ApJ...704..385Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/704/385CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/402/803 : M31 globular cluster system (Peacock+, 2010)J/A+A/508/1285 : Metallicity estimates of M31 globular clusters (Galleti+,J/A+A/471/127 : New globular clusters in M31 (Galleti+, 2007)J/AJ/133/2764 : M31 globular clusters structural parameters (Barmby+, 2007)J/A+A/416/917 : Revised Bologna Catalog of M31 globular clusters (Galleti+,J/AJ/123/2490 : RV and [Fe/H] of M31 globular cluster system (Perrett+, 2002)J/AJ/122/2458 : M31 globular clusters from HST (Barmby+, 2001)J/AJ/119/727 : M31 globular clusters photometry (Barmby+, 2000)J/AcA/48/455 : Globular Clusters in M31 and M33 (Mochejska+, 1998)J/AJ/114/1488 : Globulars in M31 (Holland+ 1997)J/A+AS/116/447 : M31 globulars clusters ellipticities (Staneva+, 1996)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/704/385https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/704/385http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/704/385https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/704/385https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/704/385http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/704/385GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/704/385/table1 (M31 spectroscopically confirmed clusters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/704/385/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/704/385/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/704/385/table1?GETtext/xml+votable180.050000true10.4302541.57272220.0055555555555555566/2622 2623 2666 2709https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/704/385?format=asciiOpticaldefaultJ/ApJ/704/385/table1M31 spectroscopically confirmed clustersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClCluster identification (GNNN-BNNN) from Barmby et al. (2000, Cat. J/AJ/119/727, <[BHB2000] NNN-NNN> in Simbad; with B part before G)meta.id;meta.maincharVmagV-band magnitudemagphot.mag;em.opt.VfloatE(B-V)B-V color excess from Rich et al. (2005AJ....129.2670R )phot.color.excessfloatr_E(B-V)[g] g: from Fan et al. (2008MNRAS.385.1973F)meta.ref;pos.framecharVMtotV_0_, dereddened total absolute magnitude (1)magphys.magAbs;em.optfloatRgcGalactocentric radius from Perrett et al. (2002, Cat. J/AJ/123/2490)kpcphys.size.radius;pos.galactocentricfloat[Fe/H]Low-resolution spectroscopic metallicities of Huchra et al. (1991ApJ...370..495H)phys.abund.Fefloate_[Fe/H]Uncertainty in [Fe/H]stat.error;phys.abund.Fefloat[a/Fe]? Low-resolution [{alpha}/Fe] of Puzia et al. 2005A&A...434..909Pphys.abundfloatnullablee_[a/Fe]? Uncertainty in [a/Fe]stat.error;phys.abundfloatnullableHBR? Horizontal branch morphology ratios (HBRs) (2)stat.paramfloatnullableBHB00Display the photometry data from Barmby et al., 2000 Cat.J/AJ/119/727meta.ref.urlcharSimbadNameSimbad column added by the CDSmeta.idcharNEDnameSimbad column added by the CDSmeta.idcharRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainJ/ApJ/704/385/ewLine parameters and integrated light equivalent widths for M31 GCs (table 4 of the paper)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClCluster identification (GNNN)meta.id;meta.maincharIonSpecies identification (1)meta.idcharlambdaWavelength in Angstroms {lambda}0.1nmem.wldoubleExPotExcitation potentialeVphys.atmol.excitationfloatlog(gf)Log of the oscillator strengthphys.atmol.oscStrengthfloatEW? Equivalent width (in m{AA})1e-13mspect.line.eqWidthfloatnullable