J/AJ/156/6ivo://CDS.VizieR/J/AJ/156/6doi:10.26093/cds/vizier.51560006CDSGerber J.M.Friel E.D.Vesperini E.2020-01-31T11:53:28Z2019-01-15T09:16:24ZCDS support team

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

cds-question@unistra.frglobular-star-clustersgiant-starsradial-velocityinfrared-photometryvisible-astronomyphotometryeffective-temperaturespectroscopychemical-abundancesWe present CN and CH band measurements for 137 red giant branch (RGB) and asymptotic giant branch (AGB) stars in the Galactic globular cluster M10. Our measurements come from low-resolution spectroscopy taken with the Hydra spectrograph on the WIYN-3.5 m telescope. We use these measurements to identify two populations of stars within the cluster, CN-normal and CN-enhanced, and find that in our sample 60% of stars are CN-enhanced. Our large sample allows us to conduct a detailed analysis on the carbon and nitrogen abundances and the radial distribution of each population separately. Our analysis of the radial dependence shows that each population has the same radial distribution in the cluster, which is likely due to the cluster being dynamically evolved. We also compare our results to other methods of classifying multiple populations in globular clusters such as the Na-O anti-correlation and the HST pseudo-color-magnitude diagrams. We find that these three methods of identifying multiple populations are in good agreement with each other for M10 and all lead to an estimate of the fraction of second-generation stars approximately equal to 60%. Among AGB stars, when classified by the CN band, there appears to be a lack of second-generation stars when compared to the RGB stars. However, when classified by [N/Fe], we find a similar 60% of AGB stars in the second generation. Finally, we use the measured carbon and nitrogen abundances in RGB stars to study the change of each element with magnitude as stars evolve up the RGB, comparing the results to globular clusters of similar metallicity, M3 and M13.2018AJ....156....6Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/156/6CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+AS/145/223 : Proper motion data of M10 (Chen+, 2000)J/ApJ/628/729 : CCD BVIc photometry of M10 stars (Pollard+, 2005)J/A+A/505/117 : Abundances of red giants in 15 globular clustersJ/A+A/505/139 : Abundances of red giants in 17 globular clustershttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/156/6https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/156/6http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/156/6https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/156/6https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/156/6http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/156/6GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/156/6/table1 (Stars measured in M10)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/156/6/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/156/6/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/156/6/table1?GETtext/xml+votable180.050000true254.29484-4.078890.0055555555555555566/310198.650015785639275e-20 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/156/6?format=asciiOpticalInfrareddefaultJ/AJ/156/6/table1Stars measured in M10recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintID[9/2787] Identifier from Pollard et al. (2005, J/ApJ/628/729)meta.id;meta.mainintRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainHRV[-168/116] Heliocentric radial velocitykm/sspect.dopplerVeloc;pos.heliocentricfloatVmag[11.85/17.6] Johnson V magnitude, Pollard et al. (2005, J/ApJ/628/729)magphot.mag;em.opt.VfloatVMag[-2.33/3.42] Absolute V magnitude (1)magphys.magAbs;em.opt.VfloatKsmag[-99.99/15.29] 2MASS K_s_ magnitudemagphot.mag;em.IR.KfloatTeff[3800/6008] Stellar effective temperatureKphys.temperature.effectivefloatlogg[0.67/3.96] Stellar surface gravitylog(cm.s**-2)phys.gravityfloatCN[-0.664/0.224] CN band strengthspect.indexfloatdCN[-0.288/0.501] {delta}CN index strengthspect.indexfloatCH[0.013/0.367] CH band strengthspect.indexfloat[C/Fe][-1.62/0.5] Log C/Fe abundancephys.abundfloat[N/Fe][-1.59/2.5] Log N/Fe abundancephys.abundfloat[O/Fe][-0.34/0.61]? Log O/Fe abundance (3) (2)phys.abundfloatnullable[Na/Fe][-0.519/0.754]? Log Na/Fe abundance (3)phys.abundfloatnullableBranch[RGB/AGB] Red giant branch in the V/B-V color-magnitude diagram (CMD)src.classcharMemb[y/n] Membership status (yes or no)meta.code.membercharSimbadSimbad column added by the CDSmeta.ref.urlchar