J/A+A/534/A96ivo://CDS.VizieR/J/A+A/534/A96doi:10.26093/cds/vizier.35340096CDSSharma S.Corbelli E.Giovanardi C.Hunt L.K.Palla F.2011-12-18T20:18:57Z2011-10-12T07:23:59ZCDS support team

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

cds-question@unistra.frgalaxiesstellar-associationsinfrared-photometryThe properties of young stellar clusters (YSCs) in M33, identified from the center out to about twice the size of the bright star-forming disk, are investigated to determine possible spatial and time variations of the star formation process in this Local Group blue galaxy. 915 MIR sources have been extracted from the Spitzer 24um image. Upon inspection of H{alpha} and GALEX images and exclusion of evolved AGB stars, a sample of 648 objects is selected as candidate YSCs and their luminosity function is examined. The spectral energy distribution of each object, based on aperture photometry, is compared with Starburst99 models to derive age, mass and AV of individual clusters. In the analysis we allow for different values of the upper mass cutoff of the stellar initial mass function (IMF), the porosity of the ISM, and the dustiness of HII regions. We also examine the influence of different dust models and include corrections for incompleteness of the IMF.2011A&A...534A..96Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/534/A96CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/110/2739 : H-alpha emitting regions in M33 (Calzetti+ 1995)J/A+A/476/1161 : Spitzer photometry of M33 (Verley+, 2007)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/534/A96https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/534/A96http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/534/A96https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/534/A96https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/534/A96http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/534/A96GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/534/A96/table1 (Young Stellar Clusters in Verley et al. 2007 (Cat. J/A+A/476/1161))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/534/A96/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/534/A96/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/534/A96/table1?GETtext/xml+votable180.050000true23.3749769430.309910.005555555555555556Cone search capability for table J/A+A/534/A96/table2 (Additional 24{mu}m source catalogue and YSCs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/534/A96/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/534/A96/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/534/A96/table2?GETtext/xml+votable180.050000true23.3204330629.687446940.0055555555555555566/2153-2155 2240-22416.772611666688002e-21 2.9851966310207673e-20https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/534/A96?format=asciiInfrareddefaultJ/A+A/534/A96/table1Young Stellar Clusters in Verley et al. 2007 (Cat. J/A+A/476/1161)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/514] Sequential number of 24 micron source in M33, \dicS{[VHC2007b] IR NNN} in Simbadmeta.recordintRAJ2000Right ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainSizeSource size, semi-major axis of the ellipse fitted to the 8{sigma} isophotearcsecphys.angSize.smajAxis;meta.modelledfloatRGGalactocentric radiuskpcpos.distance;pos.galactocentricfloatJ/A+A/534/A96/table2Additional 24{mu}m source catalogue and YSCsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[516/915] Sequential number of 24 micron source in M33, \dicS{[VHC2007b] IR NNN} in Simbadmeta.recordintRAJ2000Right ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainSizeSource size, semi-major axis of the ellipse fitted to the 8{sigma} isophotearcsecphys.angSize.smajAxis;meta.modelledfloatF24umSpitzer/MIPS 24{mu}m fluxmJyphot.flux.density;em.IR.15-30umdoublee_F24umrms uncertainty on F24ummJystat.errorfloatF8um? Spitzer/IRAC 8{mu}m fluxmJyphot.flux.density;em.IR.8-15umfloatnullablee_F8um? rms uncertainty on F8ummJystat.errorfloatnullableRGGalactocentric radiuskpcpos.distance;pos.galactocentricfloatNote[YSC] YSC is for sources classified as Young Stellar Clusters and included in the analysis of YSC properties presented in the paper (1)meta.notechar