J/ApJ/829/116ivo://CDS.VizieR/J/ApJ/829/116doi:10.26093/cds/vizier.18290116CDSSakari C.M.Shetrone M.D.Schiavon R.P.Bizyaev D.Prieto C.A.,Beers T.C.Caldwell N.Garcia-Hernandez D.A.Lucatello S.Majewski S.,O'Connell R.W.Pan K.Strader J.2017-07-04T07:08:24Z2017-01-23T12:12:03ZCDS support team

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

cds-question@unistra.frglobular-star-clusterschemical-abundancesinfrared-astronomyspectroscopygalaxiesChemical abundances are presented for 25 M31 globular clusters (GCs), based on moderately high resolution (R=22500) H-band integrated light (IL) spectra from the Apache Point Observatory Galactic Evolution Experiment (APOGEE). Infrared (IR) spectra offer lines from new elements, lines of different strengths, and lines at higher excitation potentials compared to the optical. Integrated abundances of C, N, and O are derived from CO, CN, and OH molecular features, while Fe, Na, Mg, Al, Si, K, Ca, and Ti abundances are derived from atomic features. These abundances are compared to previous results from the optical, demonstrating the validity and value of IR IL analyses. The CNO abundances are consistent with typical tip of the red giant branch stellar abundances but are systematically offset from optical Lick index abundances. With a few exceptions, the other abundances agree between the optical and the IR within the 1{sigma} uncertainties. The first integrated K abundances are also presented and demonstrate that K tracks the {alpha} elements. The combination of IR and optical abundances allows better determinations of GC properties and enables probes of the multiple populations in extragalactic GCs. In particular, the integrated effects of the Na/O anticorrelation can be directly examined for the first time.2016ApJ...829..116Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/829/116CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/143 : Revised Bologna Catalog of M31 clusters, V.5 (Galleti+ 2012)J/AJ/151/144 : ASPCAP weights of 15 APOGEE chemical elements (Garcia+, 2016)J/ApJS/221/24 : SDSS-III APOGEE H-band spectral line lists (Shetrone+, 2015)J/ApJ/813/97 : M62 (NGC 6266) giant branch stars abundances (Lapenna+, 2015)J/AJ/149/153 : Abundances of red giants in 10 GCs (Meszaros+, 2015)J/MNRAS/434/358 : 4 Galactic globular clusters Fe line depths (Sakari+, 2013)J/ApJ/773/L36 : NGC 5128 globular cluster abundances (Colucci+, 2013)J/ApJ/746/29 : High-resolution GC abundances. IV. 8 LMC GCs (Colucci+, 2012)J/AJ/143/14 : Lick indices of M31 globular clusters (Schiavon+, 2012)J/AJ/141/61 : Star clusters in M31. II. (Caldwell+, 2011)J/A+A/508/1285 : Metallicity estimates of M31 GCs (Galleti+, 2009)J/A+A/507/1375 : HST/ACS VI data of M31 globular clusters (Perina+, 2009)J/ApJ/704/385 : M31 integrated light abundances (Colucci+, 2009)J/A+A/505/139 : Abundances of red giants in 17 GCs (Carretta+, 2009)J/AJ/137/94 : Star clusters in M31 (Caldwell+, 2009)J/AJ/133/2764 : M31 globular clusters structural parameters (Barmby+, 2007)J/AJ/123/2490 : RV and [Fe/H] of M31 globular cluster system (Perrett+, 2002)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/829/116https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/829/116http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/829/116https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/829/116https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/829/116http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/829/116GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/829/116/gcs (Globular cluster list and mean H-band abundances: Fe, C, N, O, Na, Mg, Al, Si, Ca and Ti)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/829/116/gcs?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/829/116/gcs?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/829/116/gcs?GETtext/xml+votable180.050000true10.1103666741.457419440.0055555555555555566/2621 2623 2666 2708 27091.143914381504295e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/829/116?format=asciiInfraredOpticaldefaultJ/ApJ/829/116/gcsGlobular cluster list and mean H-band abundances: Fe, C, N, O, Na, Mg, Al, Si, Ca and TiNv[3/11] Number of visits (3)meta.numberintSKHBOther cluster namemeta.idcharf_BolFlag(s) on Bol (1)meta.codecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintOptDisplay optical abundances from HET if anymeta.ref.urlcharBolCluster namemeta.id;meta.maincharprimaryRAJ2000Hour of right ascension (J2000) (2)pos.eq.raDEJ2000Degree of declination (J2000) (2)pos.eq.decRproj[1.7/18.3] Pojected distance from the center of M31 (2)kpcpos.distancefloatVmag[14/16.6] V-band magnitude (2)magphot.mag;em.opt.VfloatHmag[11.2/13.5] H-band magnitude (2)magphot.mag;em.IR.HfloatEpochObserving epoch(s) (Clusters were observed in 2011 and/or 2013)time.epochcharS/N[7.9/65.8] Signal-to-noise ratio (4)stat.snrfloatHRV[-555/-54] Heliocentric velocitykm/sspect.dopplerVeloc;pos.heliocentricfloate_HRV[0.3/1] HRV uncertaintykm/sstat.errorfloat[FeI/H][-1.9/-0.1] The H-band FeI abundancephys.abundfloate_[FeI/H][0.03/0.2] [FeI/H] uncertaintystat.error;phys.abundfloatNFeI[2/13] Number of measured lines for [FeI/H]meta.numberint[C/Fe][-0.6/-0.03] [C/Fe] abundance (5)phys.abundfloate_[C/Fe][0.04/0.2] [C/Fe] uncertaintystat.error;phys.abundfloatNC[1/5] Number of measured lines for [C/Fe]meta.numberint[N/Fe][0.9/1.4] [N/Fe] abundance (5)phys.abundfloate_[N/Fe][0.04/0.2] [N/Fe] uncertaintystat.error;phys.abundfloatNN[1/8] Number of measured lines for [N/Fe]meta.numberint[O/Fe][0.07/0.6] [O/Fe] abundance (5)phys.abundfloate_[O/Fe][0.03/0.8] [O/Fe] uncertaintystat.error;phys.abundfloatNO[1/5] Number of measured lines for [O/Fe]meta.numberint[Na/Fe][0.3/0.7]? H-band Na abundancephys.abundfloatnullablee_[Na/Fe][0.05/0.2]? [Na/Fe] uncertaintystat.error;phys.abundfloatnullableNNa[1/2]? Number of measured lines for [Na/Fe]meta.numberintnullable[Mg/Fe][-0.2/0.5]? H-band Mg abundancephys.abundfloatnullablee_[Mg/Fe][0.05/0.2]? [Mg/Fe] uncertaintystat.error;phys.abundfloatnullableNMg[1/4]? Number of measured lines for [Mg/Fe]meta.numberintnullable[Al/Fe][0.1/0.7]? H-band Al abundancephys.abundfloatnullablee_[Al/Fe][0.05/0.2]? [Al/Fe] uncertaintystat.error;phys.abundfloatnullableNAl[1/2]? Number of measured lines for [Al/Fe]meta.numberintnullablef_NAl[a] Flag on NAl (6)meta.codechar[Si/Fe][0.1/0.6] H-band [Si/Fe] abundancephys.abundfloate_[Si/Fe][0.05/0.2] [Si/Fe] uncertaintystat.error;phys.abundfloatNSi[1/5] Number of measured lines for [Si/Fe]meta.numberint[Ca/Fe][0.2/0.5]? H-band [Ca/Fe] abundancephys.abundfloatnullablee_[Ca/Fe][0.05/0.4]? [Ca/Fe] uncertaintystat.error;phys.abundfloatnullableNCa[1/4]? Number of measured lines for [Ca/Fe]meta.numberintnullable[Ti/Fe][0.2/0.5]? H-band [Ti/Fe] abundancephys.abundfloatnullablee_[Ti/Fe][0.07/0.2]? [Ti/Fe] uncertaintystat.error;phys.abundfloatnullableNTi[1/3]? Number of measured lines for [Ti/Fe]meta.numberintnullableSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from the Revised Bologna Catalog (Galetti+, 2012, V/143) (right ascension part)degpos.eq.ra;meta.main_DEPositions from the Revised Bologna Catalog (Galetti+, 2012, V/143) (declination part)degpos.eq.dec;meta.mainJ/ApJ/829/116/table7Observation information and derived isochrones for new optical dataAge[11/14] AgeGyrtime.ageinte_HRV[0.5/1] HRV uncertaintykm/sstat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBolGlobular cluster IDmeta.id;meta.maincharDateUT dates of observationtime.epochcharTexp[10565/16200] Exposure timestime.duration;obs.exposureintS/N[120/250] 6000{AA} signal-to-noise ratio (1)stat.snrintHRV[-516/-120] Heliocentric radial velocitykm/sspect.dopplerVeloc;pos.heliocentricfloatsigma[10.5/17] Velocity dispersionkm/sphys.veloc.dispersionfloate_sigma[0.4/0.6] sigma uncertaintykm/sstat.errorfloat[Fe/H][-1.7/-0.6] Isochrone metallicityphys.abund.ZfloatEWDisplay the optical equivalent widths for this globular clustermeta.ref.urlcharJ/ApJ/829/116/table8Line list for optical abundancesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambda[5324/7326.2] Spectral line wavelength; Angstroms0.1nmem.wl;spect.linedoubleElElement and ionization statephys.atmol.element;phys.atmol.ionizationcharEP[0/6] Excitation PotentialeVphys.atmol.excitationfloatloggf[-5.8/0.7] Log oscillator strengthphys.atmol.oscStrengthfloatB006EW[21/120]? B006 Equivalent width; milliAngstroms1e-13mspect.line.eqWidthfloatnullableB063EW[15/114.1]? B063 Equivalent width; m{AA}1e-13mspect.line.eqWidthfloatnullableB171EW[26/143]? B171 Equivalent width; milliAngstroms1e-13mspect.line.eqWidthfloatnullableB311EW[13/149]? B311 Equivalent width; milliAngstroms1e-13mspect.line.eqWidthfloatnullableB472EW[11/118]? B472 Equivalent width; milliAngstroms1e-13mspect.line.eqWidthfloatnullable