J/MNRAS/489/2792ivo://CDS.VizieR/J/MNRAS/489/2792doi:10.26093/cds/vizier.74892792CDSZanella A.Le Floc'h E.Harrison C.M.Daddi E.Bernhard E.Gobat R.,Strazzullo V.Valentino F.Cibinel A.Sanchez Almeida J.Kohandel M.,Fensch J.Behrendt M.Burkert A.Onodera M.Bournaud F.Scholtz J.2024-08-20T20:12:49Z2023-02-13T13:35:19ZCDS support team

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

cds-question@unistra.frgalaxy-clustersgalaxiesspectroscopyphotometryultraviolet-astronomyvisible-astronomyinfrared-astronomyWe investigate the contribution of clumps and satellites to the galaxy mass assembly. We analysed spatially resolved HubbleSpace Telescope observations (imaging and slitless spectroscopy) of 53 star-forming galaxies at z~1-3. We created continuum and emission line maps and pinpointed residual 'blobs' detected after subtracting the galaxy disc. Those were separated into compact (unresolved) and extended (resolved) components. Extended components have sizes ~2kpc and comparable stellar mass and age as the galaxy discs, whereas the compact components are 1.5dex less massive and 0.4dex younger than the discs. Furthermore, the extended blobs are typically found at larger distances from the galaxy barycentre than the compact ones. Prompted by these observations and by the comparison with simulations, we suggest that compact blobs are in situ formed clumps, whereas the extended ones are accreting satellites. Clumps and satellites enclose, respectively, ~20 per cent and ~<80 per cent of the galaxy stellar mass, ~30 per cent and ~20 per cent of its star formation rate. Considering the compact blobs, we statistically estimated that massive clumps (M_{*}_>~10^9^M_{sun}_) have lifetimes of ~650Myr, and the less massive ones (10^8^< M_{*}_<10^9^M_{sun}_) of ~145Myr. This supports simulations predicting long-lived clumps (lifetime >~100Myr). Finally, ~<30 per cent (13 per cent) of our sample galaxies are undergoing single (multiple) merger(s), they have a projected separation ~<10kpc, and the typical mass ratio of our satellites is 1:5 (but ranges between 1:10 and 1:1), in agreement with literature results for close pair galaxies.2019MNRAS.489.2792Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/489/2792CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/489/2792https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/489/2792http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/489/2792https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/489/2792https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/489/2792http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/489/2792GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/489/2792/tabled1 (Properties of our galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/489/2792/tabled1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/489/2792/tabled1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/489/2792/tabled1?GETtext/xml+votable180.050000true222.318322738.921833430.0055555555555555566/8339https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/489/2792?format=asciiUVOpticalInfrareddefaultJ/MNRAS/489/2792/tabled1Properties of our galaxiesSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBlobIndicates blob in Table D2meta.ref.urlcharID[107/915] Galaxy identifiermeta.id;meta.mainintprimaryRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainzRedshiftsrc.redshiftfloate_zError on zstat.error;src.redshiftfloatReEffective radiuskpcphys.size.radiusfloatlogM*Logarithm of stellar mass estimated from the SED fittinglog(solMass)phys.massfloatlogSFRLogarithm of star formation rate from SED fittinglog(solMass.yr**-1)phys.SFRfloatE(B-V)Reddening estimated from the Balmer decrement when longslit Subaru/MOIRCS spectra are available, from SED fitting otherwisemagphot.color.excessfloate_E(B-V)Error on E(B-V)magstat.errorfloatl_ZLimit flag on Zmeta.code.errorcharZ? Gas-phase metallicity 12+log(O/H) estimated from the [OIII]/[OII] line ratio, when the lines were detectedphys.abund.ZfloatnullableE_Z? Upper error on Zstat.errorfloatnullablee_Z? Lower error on Zstat.errorfloatnullableF140WObserved galaxy flux in the F140W broad-band filter1e-21mW.m**-2phot.mag;em.IR.Hfloate_F140WError on F140W1e-21mW.m**-2stat.errorfloatF105W? Observed galaxy flux in the F105W broad-band filter1e-21mW.m**-2phot.flux.density;em.IR.Jfloatnullablee_F105W? Error on F105W1e-21mW.m**-2stat.errorfloatnullableF606WObserved galaxy flux in the F606W broad-band filter1e-21mW.m**-2phot.mag;em.opt.Rfloate_F606WError on F606W1e-21mW.m**-2stat.errorfloatl_F[OII]Limit flag on F[OII]meta.code.errorcharF[OII]? Observed [OII] flux of the galaxy1e-17mW.m**-2phot.fluxfloatnullablee_F[OII]? Error on F[OII]1e-17mW.m**-2stat.errorfloatnullablel_FHbetaLimit flag on FHbetameta.code.errorcharFHbeta? Observed H{beta} flux of the galaxy1e-17mW.m**-2phot.flux;spect.linefloatnullablee_FHbeta? Error on FHbeta1e-17mW.m**-2stat.errorfloatnullablel_F[OIII]Limit flag on F[OIII]meta.code.errorcharF[OIII]? Observed [OIII] flux of the galaxy1e-17mW.m**-2phot.flux;spect.linefloatnullablee_F[OIII]? Error on F[OIII]1e-17mW.m**-2stat.errorfloatnullableFHalpha? Observed H{alpha} flux of the galaxy1e-17mW.m**-2phot.flux;spect.linefloatnullablee_FHalpha? Error on FHalpha1e-17mW.m**-2stat.errorfloatnullableJ/MNRAS/489/2792/tabled2Physical properties of the compact and extended blobsl_SFRLimit flag on SFRmeta.code.error;phys.SFRchare_F105W? Error on F105W1e-21mW.m**-2stat.errorfloatnullablel_F606WLimit flag on F606wmeta.code.errorcharF606WObserved blob flux in the F606W broad-band filter1e-21mW.m**-2phot.mag;em.opt.Rfloate_F606W? Error on F606W1e-21mW.m**-2stat.errorfloatnullablel_F[OII]Limit flag on F[OII]meta.code.errorcharF[OII]? Observed [OII] flux of the blob1e-17mW.m**-2phot.fluxfloatnullablee_F[OII]? Error on F[OII]1e-17mW.m**-2stat.errorfloatnullablel_FHbetaLimit flag on FHbetameta.code.errorcharl_F[OIII]Limit flag on F[OIII]meta.code.errorcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintID[123/915] Galaxy identifiermeta.id;meta.mainintblob[ce] Compact 'c' or extended 'e' blobmeta.code.classcharl_F140WLimit flag on F140Wmeta.code.errorcharF140WObserved blob flux in the F140W broad-band filter1e-21mW.m**-2phot.mag;em.IR.Hfloate_F140W? Error on F140W1e-21mW.m**-2stat.errorfloatnullablel_F105WLimit flag on F105Wmeta.code.errorcharF105W? Observed blob flux in the F105W broad-band filter1e-21mW.m**-2phot.flux.density;em.IR.JfloatnullableFHbeta? Observed H{beta} flux of the blob1e-17mW.m**-2phot.flux;spect.linefloatnullablee_FHbeta? Error on FHbeta1e-17mW.m**-2stat.errorfloatnullableF[OIII]? Observed [OIII] flux of the blob1e-17mW.m**-2phot.flux;spect.linefloatnullablee_F[OIII]? Error on F[OIII]1e-17mW.m**-2stat.errorfloatnullablel_FHalphaLimit flag on FHalphameta.code.errorcharFHalpha? Observed H{alpha} flux of the blob1e-17mW.m**-2phot.flux;spect.linefloatnullablee_FHalpha? Error on FHalpha1e-17mW.m**-2stat.errorfloatnullablel_M*Limit flag on M*meta.code.errorcharM*? Stellar mass1e+08solMassphys.massfloatnullablee_M*? Error on M*1e+08solMassstat.errorfloatnullableSFR? Star formation ratesolMass/yrphys.SFRfloatnullablee_SFR? Error on SFRsolMass/yrstat.error;phys.SFRfloatnullablel_AgeLimit flag on Agemeta.code.error;time.agecharAge? Age1e+07yrtime.agefloatnullableE_Age? Upper error on Age1e+07yrstat.error;stat.maxfloatnullablee_Age? Lower error on Age1e+07yrstat.error;time.agefloatnullablel_ZLimit flag on Zmeta.code.errorcharZ? Gas-phase metallicity 12+log(O/H) estimated from the [OIII]/[OII] line ratio, when the lines were detectedphys.abund.ZfloatnullableE_Z? Upper error on Zstat.errorfloatnullablee_Z? Lower error on Zstat.errorfloatnullable