J/A+A/564/L3ivo://CDS.VizieR/J/A+A/564/L3doi:10.26093/cds/vizier.35649003CDSCantiello M.Blakeslee J.P.Raimondo G.Chies-Santos A.L.,Jennings Z.G.Norris M.A.Kuntschner H.2014-09-03T16:22:34Z2014-03-26T07:45:17ZCDS support team

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

cds-question@unistra.frgalaxiesglobular-star-clustersinfrared-photometryWe combined new near-infrared VLT/HAWK-I data of the globular clusters (GCs) in the isolated edge-on S0 galaxy NGC 3115 with optical and spectroscopic ones taken from the literature, with the aim of analyzing the multiband GC color distributions. A recent study from the SLUGGS survey has shown that the GCs in this galaxy follow a bimodal distribution of CaII triplet indices. Thus, NGC3115 presents a critical example of a GC system with multiple, distinct, metallicity subpopulations, and this may argue against the "projection" scenario, which posits that the ubiquitous color bimodality mainly results from nonlinearities in the color- metallicity relations. Using optical, NIR, and spectroscopic data, we found strong and consistent evidence of index bimodality, which independently confirms the metallicity bimodality in NGC 3115 GCs. At the same time, we also found evidence for some color-color nonlinearity. Taken in the broader context of previous studies, the multicolor consistency of the GC bimodality in NGC 3115 suggests that in cases where GC systems exhibit clear differences between their optical and optical-NIR color distributions (as in some giant ellipticals), the apparent inconsistencies most likely result from nonlinearities in the color-metallicity relations.2014A&A...564L...3Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/564/L3CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/564/L3https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/564/L3http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/564/L3https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/564/L3https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/564/L3http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/564/L3GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/564/L3/table2 (Catalog of JHKs sources with VLT/HAWK-I)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/564/L3/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/564/L3/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/564/L3/table2?GETtext/xml+votable180.050000true151.26184611-7.778326110.0055555555555555566/26803 268098.627874748287006e-20 1.6829020715966446e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/564/L3?format=asciiInfrareddefaultJ/A+A/564/L3/table2Catalog of JHKs sources with VLT/HAWK-IID[1/1405] ID number of the sourcemeta.id;meta.mainintprimaryRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainJmagHAWK-I J band aperture magnitude (AB mag)magphot.mag;em.IR.Jfloate_JmagUncertainty in Jmagmagstat.error;phot.mag;em.IR.JfloatHmagHAWK-I H band aperture magnitude (AB mag)magphot.mag;em.IR.Hfloate_HmagUncertainty in Hmagmagstat.error;phot.mag;em.IR.HfloatKsmagHAWK-I Ks band aperture magnitude (AB mag)magphot.mag;em.IR.Kfloate_KsmagUncertainty in Ksmagmagstat.error;phot.mag;em.IR.KfloatCl[0/1] SExtractor mean JHKs "CLASS_STAR" parameter (1=stellar profile)src.class.starGalaxyfloat