J/AJ/163/16ivo://CDS.VizieR/J/AJ/163/16doi:10.26093/cds/vizier.51630016CDSMoeller C.Calzetti D.2022-09-30T22:24:37Z2022-04-11T07:16:54ZCDS support team

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

cds-question@unistra.fropen-star-clustersstellar-agesstellar-massesinfrared-photometryvisible-astronomybroad-band-photometryWe combine archival images for the nearby galaxy M33 (Triangulum Galaxy) from the ultraviolet (UV) to the infrared to derive ages, masses, and extinctions for the young star cluster population, and compare our physical parameters with published ones. Our goal is to test the robustness of clusters ages and masses, and possibly improve on existing ones both by expanding the wavelength range of the spectral-energy distribution (SED) fits and by using more recent population synthesis models. The rationale for this experiment is to verify the sensitivity of the clusters physical parameters to observational setups and model choices that span those commonly found in the literature. We derive the physical parameters of 137 clusters, using SEDs measured in eight UV-to-I bands, including H{alpha}, from GALEX and ground-based images. We also add the 24{mu}m image from the Spitzer Space Telescope to help break some age degeneracies. We find that our derived cluster ages show significant differences with earlier determinations, while the masses remain relatively insensitive to the fitting approach adopted. We also highlight an already known difficulty in recovering old, low-extinction clusters, as SED-fitting codes tend to prefer younger, higher extinction solutions when the extinction is a free parameter. We publish updated ages, masses, and extinctions, with uncertainties for all sample star clusters, together with their photometry. Given the proximity of M33, this represents an important population to secure for the study of star formation and cluster evolution in spirals.2022AJ....163...16Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/163/16CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+AS/141/371 : Low-mass stars evolut. tracks & isochrones (Girardi+, 2000)J/ApJ/633/871 : Positions and photometry of HII knots in M51 (Calzetti+, 2005)J/AJ/131/2478 : M31 and M33 UBVRI photometry (Massey+, 2006)J/AJ/134/2474 : H{alpha} emission-line stars 7 dwarfs galaxies (Massey+, 2007)J/ApJ/658/1006 : Radial profiles for 161 face-on spirals (Munoz-Mateos+, 2007)J/AJ/134/447 : Catalog of star cluster candidates in M 33 (Sarajedini+, 2007)J/ApJS/178/247 : H{alpha} and [NII] survey in local 11 Mpc (Kennicutt+, 2008)J/ApJ/706/553 : Fluxes in nearby star-forming galaxies (Boquien+, 2009)J/ApJ/703/517 : The Spitzer Local Volume Legacy: IR photometry (Dale+, 2009)J/A+A/534/A96 : Spitzer photometry of YSC in M33 (Sharma+, 2011)J/ApJ/812/147 : Slug analysis star clusters in NGC628 & 7793 (Krumholz+, 2015)J/ApJ/824/71 : Compact star clusters in M51 with HST (Chandar+, 2016)J/ApJ/841/92 : Young massive star clusters in 2 LEGUS galaxies (Ryon+, 2017)J/ApJ/889/154 : LEGUS & Ha-LEGUS obs. NGC4449 star clusters (Whitmore+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/163/16https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/163/16http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/163/16https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/163/16https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/163/16http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/163/16GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/163/16/table6 (Derived and literature physical properties of the M33 star clusters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/163/16/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/163/16/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/163/16/table6?GETtext/xml+votable180.050000true23.17887530.59405560.005555555555555556Cone search capability for table J/AJ/163/16/table3 (*Photometric measurements of the M33 star clusters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/163/16/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/163/16/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/163/16/table3?GETtext/xml+votable180.050000true23.17887530.59405560.005555555555555556Cone search capability for table J/AJ/163/16/table4 (Clusters excluded from analysis)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/163/16/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/163/16/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/163/16/table4?GETtext/xml+votable180.050000true23.307530.48433330.0055555555555555566/2154-2155 2241https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/163/16?format=asciiOpticalInfrareddefaultJ/AJ/163/16/table6Derived and literature physical properties of the M33 star clustersComm? Comments (2)meta.notecharID[0/162] Identifier, this workmeta.id;meta.mainintAgeSM[6.52/10.3] log Age, Sarajedini+, 2007, J/AJ/134/447log(yr)time.agefloatAge[6.3/10.1] log Age, this worklog(yr)time.agefloate_Age[0/3] Uncertainty (1{sigma}) in Agelog(yr)stat.error;time.agefloatMassSM[2.31/6.27] log Mass, Sarajedini+, 2007, J/AJ/134/447log(solMass)phys.massfloatMass[2/5.32] log Mass, this worklog(solMass)phys.massfloate_Mass[0.004/0.1] Uncertainty (1{sigma}) in Masslog(solMass)stat.error;phys.massfloatE(B-V)[0/0.66] Reddening (1)magphot.color.excessfloate_E(B-V)[0.01/0.22] Uncertainty in E(B-V)magstat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSM2007[9/439] Identifier from Sarajedini+, 2007, J/AJ/134/447meta.idintRAJ2000[01] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000[30] Degree of Declination (J2000)pos.eq.dec;meta.mainJ/AJ/163/16/table3*Photometric measurements of the M33 star clustersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSM2007[9/439] Identifier from Sarajedini+, 2007, J/AJ/134/447meta.idintID[0/162] Identifier, from this workmeta.id;meta.mainintprimaryl_FUVLimit flag on S-FUVmeta.code.errorcharFUVFUV Flux density, erg/s/cm2/Angstrom1e+07W.m**-3phot.flux.density;em.UV.100-200nmdoublel_NUVLimit flag on S-NUVmeta.code.errorcharNUVNUV Flux density, erg/s/cm2/Angstrom1e+07W.m**-3phot.flux.density;em.UV.200-300nmdoubleFluxUU-band flux density, erg/s/cm2/Angstrom1e+07W.m**-3phot.flux.density;em.opt.UdoubleFluxBB-band flux density, erg/s/cm2/Angstrom1e+07W.m**-3phot.flux.density;em.opt.BdoubleFluxVV-band flux density, erg/s/cm2/Angstrom1e+07W.m**-3phot.flux.density;em.opt.VdoubleFluxRR-band flux density, erg/s/cm2/Angstrom1e+07W.m**-3phot.flux.density;em.opt.RdoubleFluxHaH{alpha} flux density, erg/s/cm2/Angstrom1e+07W.m**-3phot.flux.density;em.line.HalphadoubleFluxII-band flux density, erg/s/cm2/Angstrom1e+07W.m**-3phot.flux.density;em.opt.IdoubleFlux3.63.6um flux, erg/s/cm20.001W.m**-2phot.flux.density;em.IR.3-4umdoublel_Flux24Limit flag on F-24meta.code.errorcharFlux2424um flux, erg/s/cm20.001W.m**-2phot.flux.density;em.IR.15-30umdoubleSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPosition from SIMBAD (right ascension part)degpos.eq.ra;meta.main_DEPosition from SIMBAD (declination part)degpos.eq.dec;meta.mainJ/AJ/163/16/table4Clusters excluded from analysisID[7/155] Identifier, this workmeta.id;meta.mainintCommCommentsmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSM2007[44/419] Identifier from Sarajedini+, 2007, J/AJ/134/447meta.idintRAJ2000[01] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000[30] Degree of Declination (J2000)pos.eq.dec;meta.mainAge[6.6/10.3] log Age, Sarajedini+, 2007, J/AJ/134/447log(yr)time.agefloatMass[2.62/5.57] log Mass, Sarajedini+, 2007, J/AJ/134/447log(solMass)phys.massfloat