J/AJ/156/191ivo://CDS.VizieR/J/AJ/156/191doi:10.26093/cds/vizier.51560191CDSFan Z.Li Z.Zhao G.2019-05-06T14:36:30Z2019-04-02T07:34:03ZCDS support team

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

cds-question@unistra.frgalaxiesglobular-star-clustersmetallicitystellar-agesstellar-massesastronomical-modelsIt is well-known that fitting Color-Magnitude Diagrams (CMDs) to theoretical isochrones is the main method to determine star cluster ages. However, when CMDs are not available, the Spectral Energy Distribution (SED)-fitting technique is the only other approach, although it suffers the age-metallicity-reddening degeneracy. In this work, we gather the ages, metallicities, and masses of dozens of M31 star clusters from the CMD-fitting with Hubble Space Telescope images from the literature for comparison. We check the reliability of the SED-fitting results with different models, i.e., Bruzual & Charlot (2003MNRAS.344.1000B) model (BC03), Galaxy Evolutionary Synthesis Models (GALEV), and Advanced Stellar Population Synthesis (ASPS) for the simple stellar populations (SSPs) with single stars (ss)-SSP/binary-star (bs)-SSPs models. The photometry bands includes the Galaxy Evolution Explorer GALEX FUV/NUV bands, optical/near-infrared UBVRIJHK bands, as well as the Wide-field Infrared Survey Explorer (WISE) W1/W2 bands. The comparisons show that the SED-fitting ages agree well with the CMD-fitting ages, either with the fixed metallicity or with the free metallicity for both the BC03 and the GALEV model. However, for the ASPS models, it seems that SED-fitting results are systematically older than the CMD ages, especially for the ages log t<9.0 (year). The fitting also shows that the GALEX FUV/NUV-band are more important than the WISE W1/W2 for constraining the ages, which confirms the previous findings. We also derived the masses of our sample star clusters from the BC03 and GALEV models and it is found that the values agree well with those in the literature.2018AJ....156..191Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/156/191CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/143 : Revised Bologna Catalog of M31 clusters, V.5 (Galleti+ 2012)J/A+AS/106/275 : Theoretical isochrones (Bertelli+ 1994)J/AJ/119/727 : M31 globular clusters photometry (Barmby+, 2000)J/AJ/122/2458 : M31 globular clusters from HST (Barmby+, 2001)J/AJ/123/2490 : RV and [Fe/H] of M31 globular cluster system (Perrett+, 2002)J/A+A/416/917 : Revised Bologna Catalog of M31 globular clustersJ/A+A/449/143 : Photometry of M31 globular cluster candidates (Ma+, 2006)J/AJ/133/2764 : M31 globular clusters structural parameters (Barmby+, 2007)J/ApJS/173/643 : GALEX UV photometry of M31 Globular Clusters (Rey+, 2007)J/A+A/507/1375 : HST/ACS VI data of M31 globular clusters (Perina+, 2009)J/A+A/508/1285 : Metallicity estimates of M31 globular clustersJ/AJ/139/1438 : SED and age estimates of 104 M31 globular clustersJ/A+A/531/A155 : HST photometry in six M31 globular clusters (Perina+, 2011)J/A+A/544/A155 : HST photometry of M31 globular clusters (Federici+, 2012)J/AJ/144/191 : Multicolor photometry of 135 star clusters in M31J/ApJS/199/37 : GALEX catalog of star clusters in M31 (Kang+, 2012)J/AJ/146/135 : Physical parameters of 29 M31 globular clusters (Agar+, 2013)J/ApJ/769/10 : Spectroscopy of M31 globular clusters (Jacoby+, 2013)J/AJ/148/4 : JHK photometry of 913 globular clusters in M31 (Wang+, 2014)J/ApJ/786/117 : M31 PHAT star clusters ages and masses (Fouesneau+, 2014)J/ApJ/797/116 : Chemical properties of M31 star clusters (Colucci+, 2014)J/AJ/152/208 : Ages and metallicities for M31 star clusters (Fan+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/156/191https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/156/191http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/156/191https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/156/191https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/156/191http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/156/191GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/156/191/table1 (Ages of our star clusters derived from SED fits of different passband combinations with BC03 models and Padova 2000 stellar evolutionary tracks)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/156/191/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/156/191/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/156/191/table1?GETtext/xml+votable180.050000true10.26137541.11008330.0055555555555555566/2622 2623 2666 2707 2708 2709 2752 14059 21682https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/156/191?format=asciidefaultJ/AJ/156/191/table1Ages of our star clusters derived from SED fits of different passband combinations with BC03 models and Padova 2000 stellar evolutionary tracksSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDCluster identifiermeta.id;meta.mainchar[Fe/H][-1.7/0.4]? Metallicity (only in Tables 1,3,5) (1)phys.abund.Zfloatnullablee_[Fe/H][0/2]? Lower limit uncertainty in [Fe/H] (only in Tables 1,3,5)stat.error;stat.minfloatnullableE_[Fe/H][0/1.51]? Upper limit uncertainty in [Fe/H] (only in Tables 1,3,5)stat.error;stat.maxfloatnullable[Fe/H]P[-1.82/0.68] Metallicity from Perina et al. (2010A&A...511A..23P, 2011, J/A+A/531/A155)phys.abund.Fefloatlogt[7.3/10.14] Log ageyrtime.agefloate_logt[0/1.41] Lower limit uncertainty in logtyrstat.error;stat.minfloatE_logt[0/1.44] Upper limit uncertainty in logtyrstat.error;stat.maxfloatlogtP[7.4/9.8] Log age from Perina et al. (2010A&A...511A..23P, 2011, J/A+A/531/A155)yrtime.agefloate_logtP[0/0.3] Lower limit uncertainty in logtPyrstat.error;stat.minfloatE_logtP[0.1/1.64] Upper limit uncertainty in logtPyrstat.error;stat.maxfloatlogM[3.4/5.49]? Log mass (not in Tables 5,6) (2)solMassphys.massfloatnullablee_logM[0.01/0.73]? Lower limit uncertainty in logM (not in Tables 5,6)solMassstat.error;stat.minfloatnullableE_logM[0/0.64]? Upper limit uncertainty in logM (not in Tables 5,6)solMassstat.error;stat.maxfloatnullablelogMP[3.8/5.1]? Log mass from Perina et al. (2010A&A...511A..23P, 2011, J/A+A/531/A155) (not in Tables 5,6)solMassphys.massfloatnullable_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/AJ/156/191/table2Same as Table 1 but for fixed-Z from the literaturelogt[7.3/10.14] Log ageyrtime.agefloate_logt[0/1.41] Lower limit uncertainty in logtyrstat.error;stat.minfloatE_logt[0/1.44] Upper limit uncertainty in logtyrstat.error;stat.maxfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDCluster identifiermeta.id;meta.mainchar[Fe/H]P[-1.82/0.68] Metallicity from Perina et al. (2010A&A...511A..23P, 2011, J/A+A/531/A155)phys.abund.FefloatlogtP[7.4/9.8] Log age from Perina et al. (2010A&A...511A..23P, 2011, J/A+A/531/A155)yrtime.agefloate_logtP[0/0.3] Lower limit uncertainty in logtPyrstat.error;stat.minfloatE_logtP[0.1/1.64] Upper limit uncertainty in logtPyrstat.error;stat.maxfloatlogM[3.4/5.49]? Log mass (not in Tables 5,6) (2)solMassphys.massfloatnullablee_logM[0.01/0.73]? Lower limit uncertainty in logM (not in Tables 5,6)solMassstat.error;stat.minfloatnullableE_logM[0/0.64]? Upper limit uncertainty in logM (not in Tables 5,6)solMassstat.error;stat.maxfloatnullablelogMP[3.8/5.1]? Log mass from Perina et al. (2010A&A...511A..23P, 2011, J/A+A/531/A155) (not in Tables 5,6)solMassphys.massfloatnullableJ/AJ/156/191/table3Same as Table 1 but for the GALEV models and a Kroupa (2001MNRAS.322..231K) initial mass function (IMF)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDCluster identifiermeta.id;meta.mainchar[Fe/H][-1.7/0.4]? Metallicity (only in Tables 1,3,5) (1)phys.abund.Zfloatnullablee_[Fe/H][0/2]? Lower limit uncertainty in [Fe/H] (only in Tables 1,3,5)stat.error;stat.minfloatnullableE_[Fe/H][0/1.51]? Upper limit uncertainty in [Fe/H] (only in Tables 1,3,5)stat.error;stat.maxfloatnullable[Fe/H]P[-1.82/0.68] Metallicity from Perina et al. (2010A&A...511A..23P, 2011, J/A+A/531/A155)phys.abund.Fefloatlogt[7.3/10.14] Log ageyrtime.agefloate_logt[0/1.41] Lower limit uncertainty in logtyrstat.error;stat.minfloatE_logt[0/1.44] Upper limit uncertainty in logtyrstat.error;stat.maxfloatlogtP[7.4/9.8] Log age from Perina et al. (2010A&A...511A..23P, 2011, J/A+A/531/A155)yrtime.agefloate_logtP[0/0.3] Lower limit uncertainty in logtPyrstat.error;stat.minfloatE_logtP[0.1/1.64] Upper limit uncertainty in logtPyrstat.error;stat.maxfloatlogM[3.4/5.49]? Log mass (not in Tables 5,6) (2)solMassphys.massfloatnullablee_logM[0.01/0.73]? Lower limit uncertainty in logM (not in Tables 5,6)solMassstat.error;stat.minfloatnullableE_logM[0/0.64]? Upper limit uncertainty in logM (not in Tables 5,6)solMassstat.error;stat.maxfloatnullablelogMP[3.8/5.1]? Log mass from Perina et al. (2010A&A...511A..23P, 2011, J/A+A/531/A155) (not in Tables 5,6)solMassphys.massfloatnullableJ/AJ/156/191/table4Same as Table 3 but for fixed-Z from the literatureIDCluster identifiermeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[Fe/H]P[-1.82/0.68] Metallicity from Perina et al. (2010A&A...511A..23P, 2011, J/A+A/531/A155)phys.abund.Fefloatlogt[7.3/10.14] Log ageyrtime.agefloate_logt[0/1.41] Lower limit uncertainty in logtyrstat.error;stat.minfloatE_logt[0/1.44] Upper limit uncertainty in logtyrstat.error;stat.maxfloatlogtP[7.4/9.8] Log age from Perina et al. (2010A&A...511A..23P, 2011, J/A+A/531/A155)yrtime.agefloate_logtP[0/0.3] Lower limit uncertainty in logtPyrstat.error;stat.minfloatE_logtP[0.1/1.64] Upper limit uncertainty in logtPyrstat.error;stat.maxfloatlogM[3.4/5.49]? Log mass (not in Tables 5,6) (2)solMassphys.massfloatnullablee_logM[0.01/0.73]? Lower limit uncertainty in logM (not in Tables 5,6)solMassstat.error;stat.minfloatnullableE_logM[0/0.64]? Upper limit uncertainty in logM (not in Tables 5,6)solMassstat.error;stat.maxfloatnullablelogMP[3.8/5.1]? Log mass from Perina et al. (2010A&A...511A..23P, 2011, J/A+A/531/A155) (not in Tables 5,6)solMassphys.massfloatnullableJ/AJ/156/191/table5Same as Table 1 but for the ASPS bsp-SSPs modelsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDCluster identifiermeta.id;meta.mainchar[Fe/H][-1.7/0.4]? Metallicity (only in Tables 1,3,5) (1)phys.abund.Zfloatnullablee_[Fe/H][0/2]? Lower limit uncertainty in [Fe/H] (only in Tables 1,3,5)stat.error;stat.minfloatnullableE_[Fe/H][0/1.51]? Upper limit uncertainty in [Fe/H] (only in Tables 1,3,5)stat.error;stat.maxfloatnullable[Fe/H]P[-1.82/0.68] Metallicity from Perina et al. (2010A&A...511A..23P, 2011, J/A+A/531/A155)phys.abund.Fefloatlogt[7.3/10.14] Log ageyrtime.agefloate_logt[0/1.41] Lower limit uncertainty in logtyrstat.error;stat.minfloatE_logt[0/1.44] Upper limit uncertainty in logtyrstat.error;stat.maxfloatlogtP[7.4/9.8] Log age from Perina et al. (2010A&A...511A..23P, 2011, J/A+A/531/A155)yrtime.agefloate_logtP[0/0.3] Lower limit uncertainty in logtPyrstat.error;stat.minfloatE_logtP[0.1/1.64] Upper limit uncertainty in logtPyrstat.error;stat.maxfloatJ/AJ/156/191/table6Same as Table 5 but for fixed-Z from the literatureIDCluster identifiermeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[Fe/H]P[-1.82/0.68] Metallicity from Perina et al. (2010A&A...511A..23P, 2011, J/A+A/531/A155)phys.abund.Fefloatlogt[7.3/10.14] Log ageyrtime.agefloate_logt[0/1.41] Lower limit uncertainty in logtyrstat.error;stat.minfloatE_logt[0/1.44] Upper limit uncertainty in logtyrstat.error;stat.maxfloatlogtP[7.4/9.8] Log age from Perina et al. (2010A&A...511A..23P, 2011, J/A+A/531/A155)yrtime.agefloate_logtP[0/0.3] Lower limit uncertainty in logtPyrstat.error;stat.minfloatE_logtP[0.1/1.64] Upper limit uncertainty in logtPyrstat.error;stat.maxfloat