J/ApJ/777/82ivo://CDS.VizieR/J/ApJ/777/82doi:10.26093/cds/vizier.17770082CDSKo Y.Lee M.G.Lim S.2017-07-10T06:22:10Z2015-05-06T12:06:09ZCDS support team

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

cds-question@unistra.frmagellanic-cloudsinfrared-photometrygiant-starsWe present a study of K_s_-band luminosity evolution of the asymptotic giant branch (AGB) population in simple stellar systems using star clusters in the Large Magellanic Cloud (LMC). We determine physical parameters of LMC star clusters including center coordinates, radii, and foreground reddenings. Ages of 83 star clusters are derived from isochrone fitting with the Padova models, and those of 19 star clusters are taken from the literature. The AGB stars in 102 star clusters with log(age)=7.3-9.5 are selected using near-infrared color-magnitude diagrams based on Two Micron All Sky Survey photometry. Then we obtain the K_s_-band luminosity fraction of AGB stars in these star clusters as a function of ages. The K_s_-band luminosity fraction of AGB stars increases, on average, as age increases from log(age)~8.0, reaching a maximum at log(age)~8.5, and it decreases thereafter. There is a large scatter in the AGB luminosity fraction for given ages, which is mainly due to stochastic effects. We discuss this result in comparison with five simple stellar population models. The maximum K_s_-band AGB luminosity fraction for bright clusters is reproduced by the models that expect the value of 0.7-0.8 at log(age)=8.5-8.7. We discuss the implication of our results with regard to the study of size and mass evolution of galaxies.2013ApJ...777...82Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/777/82CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)VII/183 : The Cluster System of the LMC (Kontizas+ 1990)J/MNRAS/436/136 : Ages and masses of LMC clusters (de Grijs+, 2013)J/MNRAS/430/676 : Massive clusters in the LMC (Baumgardt+, 2013)J/A+A/555/A131 : Parameters of star clusters in the LMC (Palma+, 2013)J/ApJ/761/16 : Sun IR colors from Line-Depth Ratios (Casagrande+, 2012)J/A+A/543/A75 : Near-IR spectra of LMC globular clusters (Lyubenova+, 2012)J/ApJ/751/122 : Ages and masses for 920 LMC clusters (Popescu+, 2012)J/ApJ/749/124 : Spectroscopy on LMC clusters (Colucci+, 2012)J/AJ/142/48 : LMC star clusters structural parameters (Werchan+, 2011)J/AJ/139/878 : RGB stars in 8 LMC clusters (Sharma+, 2010)J/A+A/517/A50 : Ages of young SMC/LMC star clusters (Glatt+, 2010)J/MNRAS/404/1639 : MILES base models + new line index system (Vazdekis+, 2010)J/A+A/510/A19 : K-band spectra of 6 LMC globular clusters (Lyubenova+, 2010)J/AJ/137/4810 : LMC-SAGE AGB star candidates (Srinivasan+, 2009)J/MNRAS/389/678 : Extended objects in Magellanic Clouds (Bica+, 2008)J/MNRAS/386/1380 : BVRI photometry of LMC star clusters (Kumar+, 2008)J/A+A/448/181 : IR colours of AGB and post-AGB stars (Groenewegen+, 2006)J/AJ/128/1606 : Magellanic Clouds Photom. Survey: the LMC (Zaritsky+, 2004)J/A+A/392/1 : Spectrophotom. of simulated Stellar Pop. (Schulz+, 2002)J/AcA/50/337 : OGLE LMC star clusters (Pietrzynski+, 2000)J/A+AS/141/371 : Low-mass stars evolutionary tracks (Girardi+, 2000)J/AJ/116/723 : LMC star clusters ages and metallicity (Bica+ 1998)J/MNRAS/272/391 : Globular clusters in the Magellanic Clouds (Ferraro+, 1995)J/A+AS/106/275 : Theoretical isochrones (Bertelli+ 1994)J/AJ/99/784 : IR photometry of LMC long-period variables (Hughes+ 1990)J/ApJ/348/98 : LMC AGB stars IRAS fluxes (Reid+ 1990)http://irsa.ipac.caltech.edu/applications/2MASS/IM/interactive.html :https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/777/82https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/777/82http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/777/82https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/777/82https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/777/82http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/777/82GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/777/82/clusters (Physical parameters of star clusters in the LMC and properties of their AGB populations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/777/82/clusters?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/777/82/clusters?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/777/82/clusters?GETtext/xml+votable180.050000true69.4627917-69.02858330.0055555555555555565/8263 8269 8272 8273 8274 8278 8280 6/33045 33046 33049 33051 33072 33084 33100 33101 33102 33105 33107 33108 33110 33111 33116 33125 33127 33136 33137 33138 33793 37408 37516 37537 389227.952274030004205e-20 1.0188844282367877e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/777/82?format=asciiInfrareddefaultJ/ApJ/777/82/clustersPhysical parameters of star clusters in the LMC and properties of their AGB populationsSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of star clustermeta.id;meta.maincharRAJ2000[4/6] Hour of Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000[63/74] Degree of Declination (J2000)pos.eq.dec;meta.mainr[0/1]? Reference for position (1)meta.ref;pos.frameintnullableRad[12/156] Cluster radiusarcsecphys.angSize;srcfloate_Rad[4/4.5]? Uncertainty in Radarcsecstat.errorfloatnullabler_Rad[0/1]? Reference of Rad (1)meta.ref;pos.frameintnullablelogAge[7.3/9.5] Log of the agelog(yr)time.agefloatE_logAge[0.01/0.2] Upper error in logAgelog(yr)stat.error;stat.maxfloate_logAge[0.01/0.8]? Lower error in logAgelog(yr)stat.error;time.agefloatnullabler_logAge[0/5]? Reference in logAge (2)meta.ref;pos.frameintnullableE(B-V)[0/0.3] Foreground reddening E(B-V)magphot.color.excessfloatr_E(B-V)[0/99]? Reference of E(B-V) (3)meta.ref;pos.frameintnullableKsmag[6.18/11.82] Star cluster integrated Ks band magnitudemagphot.mag;em.IR.Kfloate_Ksmag[0.002/0.07] Photometric error in Ksmagmagstat.error;phot.mag;em.IR.KfloatLKs[0.9/171.1] Star cluster integrated Ks band luminosity10000solLumphys.luminosity;em.IR.KfloatE_LKsUpper error in LKs10000solLumstat.error;stat.maxfloate_LKsLower error in LKs10000solLumstat.errorfloatNagb[1/10] Number of AGB stars in clustermeta.numberintFagb[0/3.7] Normalized number of field AGB stars around clustermeta.id;obs.fieldfloatLagb[0.6/31] Ks band luminosity of AGB stars in cluster10000solLumphys.luminosity;em.IR.Kfloate_LagbUncertainty in Lagb10000solLumstat.errorfloatLagc[0/27] Ks band luminosity of AGB stars in cluster after field subtraction10000solLumphys.luminosity;em.IR.Kfloate_Lagc[0/12] Uncertainty in Lagc10000solLumstat.errorfloatfL[0/1] Ks band luminosity fraction of AGB stars in clusterstatfloatE_fLUpper error in fLstat.error;stat.maxfloate_fLLower error in fLstat.errorfloatfLc[0/1] Ks band luminosity fraction of AGB stars in cluster after field subtractionstatfloatE_fLcUpper error in fLcstat.error;stat.maxfloate_fLcLower error in fLcstat.errorfloatB08Sources from Bica et al. 2008, J/MNRAS/389/678, within 18"meta.ref.urlintnullable