J/A+A/501/949ivo://CDS.VizieR/J/A+A/501/949doi:10.26093/cds/vizier.35010949CDSMora M.D.Larsen S.SKissler-Patig M.Brodie J.P.Richtler T.2009-09-20T16:56:10Z2009-09-20T16:49:12ZCDS support team

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

cds-question@unistra.frgalaxiesphotometryAims: Our goal is to investigate the formation of star clusters in relatively unperturbed environments. To do this, we studied the five nearby spiral galaxies: NGC 45, NGC 1313, NGC 4395, NGC 5236, and NGC 7793. Methods: We obtained images of the galaxies and their star cluster systems in UBVI using the Advanced Camera for Surveys (ACS) and the Wide Field Planetary Camera 2 (WFPC2) on board the Hubble Space Telescope. From a comparison of the broad-band colours with simple stellar population (SSP) models, we derived individual properties for each galaxy for the clusters such such as masses, ages, and sizes, as well as global star cluster system properties such as the age distribution, luminosity function, and disruption time for clusters. Results. We identified about 600 star cluster candidates in the five galaxies, typically spanning ages from 3.9Myr up to 1Gyr and masses from 10^2^M_{sun}_ up to 10^5^M_{sun}_. We used the cluster age distribution to reconstruct the recent star formation history of each galaxy and observed significant variations from galaxy to galaxy. We went on to derive the luminosity function of the young star clusters and found slopes around {alpha}~-2 (similar to the ones found in previous studies) and the brightest star cluster magnitudes consistent with a random sampling of the luminosity function without involving an upper luminosity cut off. Finally, the sample includes only a handful of old globular clusters in each galaxy from which we derive low globular cluster specific frequencies.2009A&A...501..949Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/501/949CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/464/495 : UBVI photometry of NGC 45 star clusters (Mora+, 2007)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/501/949https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/501/949http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/501/949https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/501/949https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/501/949http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/501/949GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/501/949/table (Derived star cluster properties for all galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/501/949/table?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/501/949/table?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/501/949/table?GETtext/xml+votable180.050000true49.64943-66.46762750.0055555555555555566/16441 28535 33193 43881https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/501/949?format=asciiOpticaldefaultJ/A+A/501/949/tableDerived star cluster properties for all galaxiesAge6log(Age) calculated with Z=0.019 Girardilog(yr)src.redshift;meta.modelledfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCluster ID (1)meta.id;meta.maincharRAJ2000Hour Right Ascension J2000pos.eq.ra;meta.mainDEJ2000Declination J2000pos.eq.dec;meta.mainXposX position on the CCD according to the imagepixpos.cartesian.x;instr.detdoubleYposY position on the CCD according to the imagepixpos.cartesian.y;instr.detdoubleBmagB(F435W) photometrymagphot.mag;em.opt.Bfloate_BmagPhotometry error of F435W (Sigma_F435W)magstat.error;phot.mag;em.opt.BfloatVmagV(F555W) photometrymagphot.mag;em.opt.Vfloate_VmagPhotometry error of F555W (Sigma_F555W)magstat.error;phot.mag;em.opt.VfloatImagI(F814W) photometrymagphot.mag;em.opt.Ifloate_ImagPhotometry error of F814W (Sigma_F814W)magstat.error;phot.mag;em.opt.IfloatUmagU(F336W) photometrymagphot.mag;em.opt.Ufloate_UmagPhotometry error of F336W (Sigma_F336W)magstat.error;phot.mag;em.opt.UfloatBfwhmSFWHM in pixels measured in the B(F435W) images according to SExtractorpixphys.angSizefloatBfwhmFWHM in pixels measured in the B(F435W) images according to ISHAPEpixphys.angSizefloatVfwhmFWHM in pixels measured in the V(F555W) images according to ISHAPEpixphys.angSizefloatIfwhmFWHM in pixels measured in the I(F814W) images according to ISHAPEpixphys.angSizefloatE(B-V)1Color excess calculated with Z=0.004 GALEVmagphot.color.excessfloatE(B-V)2Color excess calculated with Z=0.008 GALEVmagphot.color.excessfloatE(B-V)3Color excess calculated with Z=0.02 GALEVmagphot.color.excessfloatE(B-V)4Color excess calculated with Z=0.05 GALEVmagphot.color.excessfloatE(B-V)5Color excess calculated with Z=0.004 Girardimagphot.color.excessfloatE(B-V)6Color excess calculated with Z=0.019 Girardimagphot.color.excessfloatAge1log(Age) calculated with Z=0.004 GALEVlog(yr)src.redshift;meta.modelledfloatAge2log(Age) calculated with Z=0.008 GALEVlog(yr)src.redshift;meta.modelledfloatAge3log(Age) calculated with Z=0.02 GALEVlog(yr)src.redshift;meta.modelledfloatAge4log(Age) calculated with Z=0.05 GALEVlog(yr)src.redshift;meta.modelledfloatAge5log(Age) calculated with Z=0.004 Girardilog(yr)src.redshift;meta.modelledfloatMass1log(Mass) calculated with Z=0.004 GALEVlog(solMass)phys.massfloatMass2log(Mass) calculated with Z=0.008 GALEVlog(solMass)phys.massfloatMass3log(Mass) calculated with Z=0.02 GALEVlog(solMass)phys.massfloatMass4log(Mass) calculated with Z=0.05 GALEVlog(solMass)phys.massfloatMass5log(Mass) calculated with Z=0.004 Girardilog(solMass)phys.massfloatMass6log(Mass) calculated with Z=0.019 Girardilog(solMass)phys.massfloat