J/ApJ/853/108ivo://CDS.VizieR/J/ApJ/853/108doi:10.26093/cds/vizier.18530108CDSGuo Y.Rafelski M.Bell E.F.Conselice C.J.Dekel A.Faber S.M.,Giavalisco M.Koekemoer A.M.Koo D.C.Lu YuMandelker N.Primack J.R.,Ceverino D.de Mello D.F.Ferguson H.C.Hathi N.Kocevski D.,Lucas R.A.Perez-Gonzalez P.G.Ravindranath S.Soto E.Straughn A.,Wang W.2019-01-09T13:51:06Z2018-12-03T15:01:44ZCDS support team

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

cds-question@unistra.frgalaxiesphotometryhst-photometryultraviolet-astronomyredshiftedinfrared-photometryvisible-astronomyWide-band photometryStudying giant star-forming clumps in distant galaxies is important to understand galaxy formation and evolution. At present, however, observers and theorists have not reached a consensus on whether the observed "clumps" in distant galaxies are the same phenomenon that is seen in simulations. In this paper, as a step to establish a benchmark of direct comparisons between observations and theories, we publish a sample of clumps constructed to represent the commonly observed "clumps" in the literature. This sample contains 3193 clumps detected from 1270 galaxies at 0.5<=z<3.0. The clumps are detected from rest-frame UV images, as described in our previous paper. Their physical properties (e.g., rest-frame color, stellar mass (M*), star formation rate (SFR), age, and dust extinction) are measured by fitting the spectral energy distribution (SED) to synthetic stellar population models. We carefully test the procedures of measuring clump properties, especially the method of subtracting background fluxes from the diffuse component of galaxies. With our fiducial background subtraction, we find a radial clump U-V color variation, where clumps close to galactic centers are redder than those in outskirts. The slope of the color gradient (clump color as a function of their galactocentric distance scaled by the semimajor axis of galaxies) changes with redshift and M* of the host galaxies: at a fixed M*, the slope becomes steeper toward low redshift, and at a fixed redshift, it becomes slightly steeper with M*. Based on our SED fitting, this observed color gradient can be explained by a combination of a negative age gradient, a negative E(B-V) gradient, and a positive specific SFR gradient of the clumps. We also find that the color gradients of clumps are steeper than those of intra-clump regions. Correspondingly, the radial gradients of the derived physical properties of clumps are different from those of the diffuse component or intra-clump regions.2018ApJ...853..108Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/853/108CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/261 : GOODS initial results (Giavalisco+, 2004)J/AJ/112/359 : Galaxies in the Hubble Deep Field (van den Bergh+ 1996)J/ApJS/147/1 : Classification of nearby galaxies (Conselice+, 2003)J/ApJ/612/202 : Catalog of spheroids in UGC 10214 field (Menanteau+, 2004)J/ApJ/735/L22 : HUDF galaxy properties at z~2 (Szomoru+, 2011)J/ApJS/203/24 : Structural param. of galaxies in CANDELS (van der Wel+, 2012)J/ApJS/207/24 : GOODS-S CANDELS multiwavelength catalog (Guo+, 2013)J/ApJ/763/73 : Surface density profiles of GOODS-South gal. (Szomoru+, 2013)J/ApJ/793/101 : CANDELS z~2 galaxy properties (Trump+, 2014)J/ApJ/796/60 : ECDFS galaxies photom. redshifts + counterparts (Hsu+, 2014)J/ApJS/214/24 : 3D-HST+CANDELS catalog (Skelton+, 2014)J/ApJS/218/33 : Spitzer-CANDELS catalog within 5 deep fields (Ashby+, 2015)J/ApJS/221/11 : CANDELS visual classifications for GOODS-S (Kartaltepe+, 2015)J/ApJ/801/97 : GOODS-S & UDS stellar masses from CANDELS (Santini+, 2015)J/A+A/592/A122 : Starburst galaxies in the COSMOS field (Hinojosa-Goni+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/853/108https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/853/108http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/853/108https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/853/108https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/853/108http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/853/108GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/853/108/table4 (Catalog of clumps from 1270 galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/853/108/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/853/108/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/853/108/table4?GETtext/xml+votable180.050000true53.09076611-27.950641940.0055555555555555566/359351.1796835550914393e-19 4.75565502943315e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/853/108?format=asciiUVInfraredOpticaldefaultJ/ApJ/853/108/table4Catalog of clumps from 1270 galaxiesEFlag[0/1] Extreme SFR flag (9)meta.codeintGal[18/26834] CANDELS galaxy ID (1)meta.id;src.class.starGalaxyintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAGdeg[52.9/53.3] Galaxy Right Ascension in decimal degrees (J2000)degpos.eq.raDEGdeg[-28/-27.6] Galaxy Declination in decimal degrees (J2000)degpos.eq.decz[0.5/3] Galaxy redshift (2)src.redshiftfloatlogM*[8.8/11.5] log galactic stellar mass (3)log(solMass)phys.massfloate_logM*[0.06/0.9] Uncertainty in logM*log(solMass)stat.errorfloatlogSFR[-1.7/3.3] log galactic Star Formation Ratelog(solMass.yr**-1)phys.SFR;pos.galacticfloate_logSFR[0.02/6] Uncertainty in logSFRlog(solMass.yr**-1)stat.error;phys.SFRfloatGUmag[-23.1/-16.7] Galaxy rest-frame U-band AB magnitudemagphot.mag;em.opt.UfloatGVmag[-24/-18.1] Galaxy rest-frame V-band AB magnitudemagphot.mag;em.opt.VfloatGJmag[-25/-19] Galaxy rest-frame J-band AB magnitudemagphot.mag;em.IR.JfloatRad[0.2/5.4] Galaxy semi-major axis (4)arcsecphys.angSize;srcfloate_Rad[0/0.7] Uncertainty in Radarcsecstat.errorfloatCID[1/18] Clump identifier within Gal (5)meta.idintRAJ2000[52.9/53.3] Clump Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainindexedDEJ2000[-28/-27.6] Clump Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainindexedDetClump detection band ("v", "b" or "i") (6)meta.code;instr.filtercharfLUV[0.03/1] Ratio of clump to galaxy UV luminosity (5)phys.luminosity;arith.ratiofloatBSCBackground subtraction configuration (7)meta.codecharF435W[-0.6/2.3]? HST/ACS F435W flux densityuJyphot.mag;em.opt.Bdoublenullablee_F435W[0.001/0.05]? Uncertainty in F435WuJystat.errordoublenullableF606W[-0.03/3.5]? HST/ACS F606W flux densityuJyphot.mag;em.opt.Rdoublenullablee_F606W[0.0009/0.02]? Uncertainty in F606WuJystat.errordoublenullableF775W[-0.07/6.2]? HST/ACS F775W flux densityuJyphot.mag;em.opt.Idoublenullablee_F775W[0.001/0.04]? Uncertainty in F775WuJystat.errordoublenullableF814W[-0.1/5.8]? HST/ACS F814W flux densityuJyphot.mag;em.opt.Idoublenullablee_F814W[0.004/0.05]? Uncertainty in F814WuJystat.errordoublenullableF850LP[-0.1/7.2]? HST/ACS F850LP flux densityuJyphot.mag;em.opt.Idoublenullablee_F850LP[0.001/0.04]? Uncertainty in F850LPuJystat.errordoublenullableF105W[-0.7/8]? HST/WFC3 F105W flux densityuJyphot.mag;em.IR.Jdoublenullablee_F105W[0.001/0.03]? Uncertainty in F105WuJystat.errordoublenullableF125W[-0.2/9.6]? HST/WFC3 F125W flux densityuJyphot.mag;em.IR.Jdoublenullablee_F125W[0.001/0.2]? Uncertainty in F125WuJystat.errordoublenullableF140W[-0.3/13]? HST/WFC3 F140W flux densityuJyphot.mag;em.IR.Jdoublenullablee_F140W[0.001/0.06]? Uncertainty in F140WuJystat.errordoublenullableF160W[-0.6/15]? HST/WFC3 F160W flux densityuJyphot.mag;em.IR.Hdoublenullablee_F160W[0.001/0.05]? Uncertainty in F160WuJystat.errordoublenullableDist[0.3/7.5] Galactocentric distance; normalized by galaxy MajAxispos.distance;pos.galactocentricfloatzphot[0.2/4]? Clump photometric redshift; see Section 3.2src.redshiftfloatnullableq_zphot[-99/1] Flag on zphot (1=bad or 0=good)meta.code.qualintCMass[5.4/11] log clump stellar mass; Section 4.1 (8)log(solMass)phys.massfloatb_CMass[5/11] CMass 16% uncertainty boundarylog(solMass)stat.errorfloatB_CMass[5.6/11.2] CMass 84% uncertainty boundarylog(solMass)stat.errorfloatCSFR[-11/3] log clump Star Formation Rate (8)log(solMass.yr**-1)phys.SFRfloatb_CSFR[-20.5/2.6] CSFR 16% uncertainty boundarylog(solMass.yr**-1)stat.errorfloatB_CSFR[-3/3] CSFR 84% uncertainty boundarylog(solMass.yr**-1)stat.errorfloatE(B-V)[0/1] Clump color excess in (B-V) (8)magphot.color.excessfloatb_E(B-V)[0/1] 16% uncertainty boundary in E(B-V)magstat.errorfloatB_E(B-V)[0/1] 84% uncertainty boundary in E(B-V)magstat.errorfloatlogAge[-2/1] log clump age (8)log(Gyr)time.agefloatb_logAge[-2/1] 16% uncertainty boundary in logAgelog(Gyr)stat.error;time.agefloatB_logAge[-2/1] 84% uncertainty boundary in logAgelog(Gyr)stat.error;time.agefloatlogtau[-1/2] log {tau}-model value (8)log(Gyr)time.scalefloatb_logtau[-1/2] 16% uncertainty boundary in logtaulog(Gyr)stat.errorfloatB_logtau[-1/2] 84% uncertainty boundary in logtaulog(Gyr)stat.errorfloatCUmag[-22/-10.9]? Clump rest-frame U-band AB magnitudemagphot.mag;em.opt.Ufloatnullablee_CUmag[0.001/10]? Uncertainty in CUmagmagstat.error;phot.magfloatnullableCBmag[-22.1/-11.4]? Clump rest-frame B-band AB magnitudemagphot.mag;em.opt.Bfloatnullablee_CBmag[0.001/9.6]? Uncertainty in CBmagmagstat.error;phot.magfloatnullableCVmag[-22.1/-10.9]? Clump rest-frame V-band AB magnitudemagphot.mag;em.opt.Vfloatnullablee_CVmag[0.001/10]? Uncertainty in CVmagmagstat.error;phot.magfloatnullablelogUVSFR[-1.6/4]? log UV Star Formation Rate; see Section 4.4log(solMass.yr**-1)phys.SFRdoublenullablee_logUVSFR[0.006/5e+25]? Uncertainty in logUVSFRlog(solMass.yr**-1)stat.errordoublenullableUVE(B-V)[-6.8e-07/1.4]? UV derived E(B-V)magphot.color.excessdoublenullablee_UVE(B-V)[0/3]? Uncertainty in UVE(B-V)magstat.errordoublenullableVRFlag[0/1] Very red flag (1=very red U-V; 0=blue)meta.codeintBMFlag[0/1] Bad mass flag (1=bad; 0=ok)meta.codeint