J/MNRAS/372/1259ivo://CDS.VizieR/J/MNRAS/372/1259doi:10.26093/cds/vizier.73721259CDSSharina M.E.Afanasiev V.L.Puzia T.H.2024-07-03T20:14:23Z2007-12-05T07:10:14ZCDS support team

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

cds-question@unistra.frgalaxiesglobular-star-clusterschemical-abundancesWe present measurements of ages, metallicities and [alpha/Fe] ratios for 16 globular clusters (GCs) in NGC 147, 185 and 205 and of the central regions of the diffuse galaxy light in NGC 185 and 205. Our results are based on spectra obtained with the SCORPIO multislit spectrograph at the 6-m telescope of the Russian Academy of Sciences. We include in our analysis high-quality Hubble Space Telescope/WFPC2 photometry of individual stars in the studied GCs to investigate the influence of their horizontal branch (HB) morphology on the spectroscopic analysis. All our sample GCs appear to be old (T>8Gyr) and metal-poor ([Z/H]<1.1), except for the GCs Hubble V in NGC 205 (T=1.2+/-0.6Gyr, [Z/H]=0.6+/-0.2), Hubble VI in NGC 205 (T=4+/-2Gyr, [Z/H]=0.8+/-0.2) and FJJVII in NGC 185 (T=7+/-3Gyr, [Z/H]=0.8+/-0.2). The majority of our GCs sample has solar [alpha/Fe] enhancement in contrast to the halo population of GCs in M31 and the Milky Way. The HB morphologies for our sample GCs follow the same behaviour with metallicity as younger halo Galactic GCs. We show that it is unlikely that they bias our spectroscopic age estimates based on Balmer absorption-line indices. Spectroscopic ages and metallicities of the central regions in NGC 205 and 185 coincide with those obtained from colour-magnitude diagrams. The central field stellar populations in these galaxies have approximately the same age as their most central GCs (Hubble V in NGC 205 and FJJIII in NGC 185), but are more metal-rich than the central GCs.2006MNRAS.372.1259Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/372/1259CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/372/1259https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/372/1259http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/372/1259https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/372/1259https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/372/1259http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/372/1259GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/372/1259/objects (Globular cluster positions)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/372/1259/objects?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/372/1259/objects?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/372/1259/objects?GETtext/xml+votable180.050000true8.300791748.5090.0055555555555555566/2709 2774 2777 2780https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/372/1259?format=asciiOpticaldefaultJ/MNRAS/372/1259/objectsGlobular cluster positionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalaxyGalaxy namemeta.id.parentcharGCGlobular cluster namemeta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainSNameSimbad name of the globular clustermeta.idcharSimbadSimbad column added by the CDScharJ/MNRAS/372/1259/table56Indices corrected for zero-points of transformation to the standard systemIDGlobular cluster or Group namemeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_IDSimbad column added by the CDSmeta.notecharS/NSignal-to-noise ratio (1)stat.snrintCa4227? Ca4227 spectral index0.1nmspect.indexfloatnullablee_Ca4227? rms uncertainty on Ca4227 (G1)0.1nmstat.errorfloatnullableG4300? G4300 spectral index0.1nmspect.indexfloatnullablee_G4300? rms uncertainty on G4300 (G1)0.1nmstat.errorfloatnullableHgA? H{gamma}A spectral index0.1nmspect.indexfloatnullablee_HgA? rms uncertainty on HgA (G1)0.1nmstat.errorfloatnullableHgF? H{gamma}F spectral index0.1nmspect.indexfloatnullablee_HgF? rms uncertainty on HgF (G1)0.1nmstat.errorfloatnullableFe4383? Fe4383 spectral index0.1nmspect.indexfloatnullablee_Fe4383? rms uncertainty on Fe4383 (G1)0.1nmstat.errorfloatnullableCa4455? Ca4455 spectral index0.1nmspect.indexfloatnullablee_Ca4455? rms uncertainty on Ca4455 (G1)0.1nmstat.errorfloatnullableFe4531? Fe4531 spectral index0.1nmspect.indexfloatnullablee_Fe4531? rms uncertainty on Fe4531 (G1)0.1nmstat.errorfloatnullableFe4668? Fe4668 spectral index0.1nmspect.indexfloatnullablee_Fe4668? rms uncertainty on Fe4668 (G1)0.1nmstat.errorfloatnullableHbHbeta spectral index0.1nmspect.index;em.line.Hbetafloate_Hbrms uncertainty on Hb (G1)0.1nmstat.errorfloatFe5015Fe5015 spectral index0.1nmspect.indexfloate_Fe5015rms uncertainty on Fe5015 (G1)0.1nmstat.errorfloatMg1Mg1 spectral indexmagspect.indexfloate_Mg1rms uncertainty on Mg1 (G1)magstat.errorfloatMg2Mg2 spectral indexmagspect.indexfloate_Mg2rms uncertainty on Mg2 (G1)magstat.errorfloatMgbMgb spectral index0.1nmspect.indexfloate_Mgbrms uncertainty on Mgb (G1)0.1nmstat.errorfloatFe5270Fe5270 spectral index0.1nmspect.indexfloate_Fe5270rms uncertainty on Fe5270 (G1)0.1nmstat.errorfloatFe5335Fe5335 spectral index0.1nmspect.indexfloate_Fe5335rms uncertainty on Fe5335 (G1)0.1nmstat.errorfloatFe5406Fe5406 spectral index0.1nmspect.indexfloate_Fe5406rms uncertainty on Fe5406 (G1)0.1nmstat.errorfloat