J/ApJ/892/1ivo://CDS.VizieR/J/ApJ/892/1doi:10.26093/cds/vizier.18920001CDSWilman D.J.Fossati M.Mendel J.T.Saglia R.Wisnioski E.Wuyts S.,Forster Schreiber N.Beifiori A.Bender R.Belli S.Ubler H.Lang P.,Chan J.C.C.Davies R.L.Nelson E.J.Genzel R.Tacconi L.J.,Galametz A.Davies R.I.Lutz D.Price S.Burkert A.Tadaki K.-I.,Herrera-Camus R.Brammer G.Momcheva I.Van Dokkum P.2022-06-13T13:09:07Z2021-09-10T14:13:47ZCDS support team

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

cds-question@unistra.frgalaxiesspectroscopyinfrared-astronomyredshiftedWe present half-light sizes measured from H{alpha} emission tracing star formation in 281 star-forming galaxies from the KMOS^3D^ survey at 0.7<~z<~2.7. Sizes are derived by fitting 2D exponential disk models, with bootstrap errors averaging 20%. H{alpha} sizes are a median (mean) of 1.19 (1.26) times larger than those of the stellar continuum-which, due to radial dust gradients, places an upper limit on the growth in stellar size via star formation-with just ~43% intrinsic scatter. At fixed continuum size the H{alpha} size shows no residual trend with stellar mass, star formation rate, redshift, or morphology. The only significant residual trend is with the excess obscuration of H{alpha} by dust, at fixed continuum obscuration. The scatter in continuum size at fixed stellar mass is likely driven by the scatter in halo spin parameters. The stability of the ratio of H{alpha} size to continuum size demonstrates a high degree of stability in halo spin and in the transfer of angular momentum to the disk over a wide range of physical conditions and cosmic time. This may require local regulation by feedback processes. The implication of our results, as we demonstrate using a toy model, is that our upper limit on star-formation-driven growth is sufficient only to evolve star-forming galaxies approximately along the observed size-mass relation, consistent with the size growth of galaxies at constant cumulative comoving number density. To explain the observed evolution of the size-mass relation of star-forming disk galaxies, other processes, such as the preferential quenching of compact galaxies or galaxy mergers, may be required.2020ApJ...892....1Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/892/1CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/eso : ESO Science Archive Catalog (ESO, 1991-2021)J/ApJ/706/1364 : SINS survey of high-redshift gal. (Forster Schreiber+, 2009)J/A+A/553/A91 : Halpha3 survey of Virgo and Coma galaxies (Fossati+, 2013)J/ApJ/768/74 : PHIBSS: CO obs. of star-forming galaxies (Tacconi+, 2013)J/A+A/557/A137 : Dust effects on photometric param. in spirals (Pastrav+ 2013)J/ApJS/214/24 : 3D-HST+CANDELS catalog (Skelton+, 2014)J/A+A/579/A102 : H{alpha} imaging of Herschel Reference Survey (Boselli+, 2015)J/ApJ/816/L14 : Tully-Fisher relation in disk gal. from SPARC (Lelli+, 2016)J/ApJ/827/74 : [NII]/H{alpha} ratio in galaxies with KMOS^3D^ (Wuyts+, 2016)J/ApJS/225/27 : 3D-HST Survey: grism spectra master catalog (Momcheva+, 2016)J/ApJ/835/153 : Galaxy environment in 3D-HST fields (z=0.5-3) (Fossati+, 2017)J/ApJ/868/133 : j-M relation for disk and bulge type galaxies (Fall+, 2018)J/ApJ/877/103 : Half-mass radii for ~7000 gal. at 1.0<=z<=2.5 (Suess+, 2019)J/ApJ/886/124 : Completed KMOS^3D^ survey NIR obs. (Wisnioski+, 2019)http://www.mpe.mpg.de/ir/KMOS3D : KMOS^3D^ home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/892/1https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/892/1http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/892/1https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/892/1https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/892/1http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/892/1GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/892/1/table3 (The size measurements table)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/892/1/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/892/1/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/892/1/table3?GETtext/xml+votable180.050000true150.13568112.19941080.0055555555555555566/17679 17690 27258 35935https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/892/1?format=asciiInfrareddefaultJ/ApJ/892/1/table3The size measurements tableSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDKMOS3D identifier from Wisnioski+, 2019, J/ApJ/886/124meta.id;meta.maincharTargetKMOS3D ID as it was targeted for observationsmeta.idcharz[0.62/2.68] Spectroscopic redshiftsrc.redshiftdoublereF160W[0.6/9.5] Effective radius in CANDELS WFC3/F160W imageskpcmeta.ref;pos.framefloate_reF160W[0.009/0.7] Uncertainty in reF160Wkpcstat.errorfloatreHa[1/14.8] Effective radius in KMOS Halpha imageskpcphys.size.radius;spect.linefloate_reHa[0.2/10] Lower uncertainty in reHakpcstat.errorfloatE_reHa[0.2/94] Upper uncertainty in reHakpcstat.error;stat.maxfloat_RAPositions from KMOS3D (Wisnioski+ 2019, J/ApJ/886/124) (right ascension part)degpos.eq.ra;meta.main_DEPositions from KMOS3D (Wisnioski+ 2019, J/ApJ/886/124) (declination part)degpos.eq.dec;meta.main