J/ApJ/839/58ivo://CDS.VizieR/J/ApJ/839/58doi:10.26093/cds/vizier.18390058CDSSimpson J.M.Smail I.Swinbank A.M.Ivison R.J.Dunlop J.S.,Geach J.E.Almaini O.Arumugam V.Bremer M.N.Chen C.-C.Conselice C.,Coppin K.E.K.Farrah D.Ibar E.Hartley W.G.Ma C.J.Michalowski M.J.,Scott D.Spaans M.Thomson A.P.van der Werf P.P.2019-02-04T11:12:40Z2018-01-11T08:51:52ZCDS support team

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

cds-question@unistra.frgalaxiesphotometrymillimeter-astronomysubmillimeter-astronomyradio-sourcesinfrared-photometryWe present a multi-wavelength analysis of 52 submillimeter galaxies (SMGs), identified using ALMA 870{mu}m continuum imaging in a pilot program to precisely locate bright SCUBA-2-selected submillimeter sources in the UKIDSS Ultra Deep Survey (UDS) field. Using the available deep (especially near-infrared) panoramic imaging of the UDS field at optical-to-radio wavelengths we characterize key properties of the SMG population. The median photometric redshift of the bright ALMA/SCUBA-2 UDS (AS2UDS) SMGs that are detected in a sufficient number of wavebands to derive a robust photometric redshift is z=2.65+/-0.13. However, similar to previous studies, 27% of the SMGs are too faint at optical-to-near-infrared wavelengths to derive a reliable photometric redshift. Assuming that these SMGs lie at z>~3 raises the median redshift of the full sample to z=2.9+/-0.2. A subset of 23 unlensed, bright AS2UDS SMGs have sizes measured from resolved imaging of their rest- frame far-infrared emission. We show that the extent and luminosity of the far-infrared emission are consistent with the dust emission arising from regions that are, on average, optically thick at a wavelength of {lambda}_0_>=75{mu}m (1{sigma} dispersion of 55-90{mu}m). Using the dust masses derived from our optically thick spectral energy distribution models, we determine that these galaxies have a median hydrogen column density of N_H_=9.8_-0.7_^+1.4^x10^23^cm^-2^, or a corresponding median V-band obscuration of Av=540_-40_^+80^mag, averaged along the line of sight to the source of their rest-frame ~200{mu}m emission. We discuss the implications of this extreme attenuation by dust for the multi-wavelength study of dusty starbursts and reddening-sensitive tracers of star formation.2017ApJ...839...58Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/839/58CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/319 : UKIDSS-DR9 LAS, GCS and DXS Surveys (Lawrence+ 2012)VIII/95 : Herschel Multi-tiered Extragalactic Survey (Oliver+, 2012)J/ApJ/622/772 : Redshift survey of submillimeter galaxies (Chapman+, 2005)J/MNRAS/372/1621 : SCUBA Half-Degree Extragalactic Survey. II (Coppin+, 2006)J/MNRAS/380/199 : SCUBA Half-Degree Extragalactic Survey. III (Ivison+, 2007)J/ApJS/176/1 : Subaru/XMM-Newton deep survey (SXDS). II. (Furusawa+, 2008)J/MNRAS/385/2225 : AzTEC millimetre survey of COSMOS field (Scott+, 2008)J/ApJ/699/1610 : Spitzer survey of submillimeter galaxies (Hainline+, 2009)J/MNRAS/413/2314 : Radio and MIR counterpart of submm galaxies (Biggs+, 2011)J/ApJ/768/91 : ALMA observations of LESS submm galaxies (Hodge+, 2013)J/MNRAS/444/117 : Luminous (sub-)millimetre galaxies (Koprowski+, 2014)J/MNRAS/441/1017 : Multiwavelength photometry of 34 galaxies (Rowlands+, 2014)J/ApJ/788/125 : An ALMA survey of ECDFS submm galaxies (Simpson+, 2014)J/ApJ/799/10 : Arp 220 6 and 33GHz images (Barcos-Munoz+, 2015)J/ApJ/806/110 : ALESS survey: SMGs in the ECDF-S data (da Cunha+, 2015)J/A+A/591/A136 : Galaxies & QSOs FIR size & surface brightness (Lutz+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/839/58https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/839/58http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/839/58https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/839/58https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/839/58http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/839/58GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/839/58/smgs (Observed and physical properties of the ALMA submillimeter galaxies (SMGs) (tables 1 and 2))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/839/58/smgs?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/839/58/smgs?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/839/58/smgs?GETtext/xml+votable180.050000true34.8535-5.155750.0055555555555555566/17677 17679 17688 176909.276497240453405e-25 9.264782775159061e-22https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/839/58?format=asciiMillimeterRadioInfrareddefaultJ/ApJ/839/58/smgsObserved and physical properties of the ALMA submillimeter galaxies (SMGs) (tables 1 and 2)e_TThick[1/4]? Uncertainty in TThickKstat.errorfloatnullablel_S250Limit flag on S250meta.code.errorchare_Kmag[0.01/2]? Uncertainty in Kmagmagstat.error;phot.mag;em.IR.KfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDIdentifiermeta.id;meta.maincharf_ID[a] a: identified as a potentially lensed SMGmeta.codecharRAJ2000[2] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000[4/5] Degree of Declination (J2000)pos.eq.dec;meta.mainl_KmagLimit flag on Kmagmeta.code.errorcharKmag[21/25.4]? Apparent K band total AB magnitudemagphot.mag;em.IR.KfloatnullableS250[7/86] Herschel/SPIRE 250um band flux densitymJyphot.flux.density;em.mm.750-1500GHzfloate_S250[2/8]? Uncertainty in S250mJystat.errorfloatnullablel_S350Limit flag on S350meta.code.errorcharS350[9/65] Herschel/SPIRE 350um band flux densitymJyphot.flux.density;em.mm.750-1500GHzfloate_S350[3/7]? Uncertainty in S350mJystat.errorfloatnullablel_S500Limit flag on S500meta.code.errorcharS500[12/38] Herschel/SPIRE 500um band flux densitymJyphot.flux.density;em.mm.400-750GHzfloate_S500[3/7]? Uncertainty in S500mJystat.errorfloatnullableS870[1/13] ALMA 870 micron band flux densitymJyphot.flux.density;em.mm.200-400GHzfloate_S870[0.4/1] Uncertainty in S870mJystat.errorfloatS1.4[39/783]? VLA 1.4GHz band flux densityuJyphot.flux.density;em.radio.750-1500MHzfloatnullablee_S1.4[7/45]? Uncertainty in S1.4uJystat.errorfloatnullablezphot[0.6/5.1]? Photometric redshiftsrc.redshiftfloatnullableE_zphot[0.04/1.6]? Upper uncertainty in zphotstat.error;stat.maxfloatnullablee_zphot[0.05/2.1]? Lower uncertainty in zphotstat.errorfloatnullableLThin[1.2/12]? Far-IR luminosity assuming an optically-thin SED1e+12solLumphys.luminosity;em.IRfloatnullableE_LThin[0/1.5]? Upper uncertainty in LThin (1)1e+12solLumstat.error;stat.maxfloatnullablee_LThin[0.05/11]? Lower uncertainty in LThin (1)1e+12solLumstat.errorfloatnullablel_TThinLimit flag on TThinmeta.code.errorcharTThin[15/55]? Temperature assuming an optically-thin SEDKphys.temperaturefloatnullableE_TThin[0.6/6]? Upper uncertainty in TThinKstat.error;stat.maxfloatnullablee_TThin[1.4/5]? Lower uncertainty in TThinKstat.errorfloatnullablel_FWHMLimit flag on FWHMmeta.code.error;phys.angSizecharFWHM[0.1/0.7]? Intrinsic source size (2)arcsecphys.angSizefloatnullablee_FWHM[0.02/0.07]? Uncertainty in FWHMarcsecstat.error;phys.angSizefloatnullablel_TBLimit flag on TBmeta.code.errorcharTB[12.6/55.5]? Average dust brightness temperature (3)Kphys.temperaturefloatnullableLThick[1.5/11.2]? Far-IR luminosity (4)1e+12solLumphys.luminosity;em.IRfloatnullableE_LThick[0.3/2.1]? Upper uncertainty in LThick1e+12solLumstat.error;stat.maxfloatnullablee_LThick[0.2/2]? Lower uncertainty in LThick1e+12solLumstat.errorfloatnullableTThick[27/46]? Temperature (4)Kphys.temperaturefloatnullableE_TThick[1/5]? Uncertainty in TThickKstat.error;stat.maxfloatnullablelambda[32/125]? Wavelength (4)umem.wlintnullableE_lambda[4/20]? Upper uncertainty in lambdaumstat.error;stat.maxintnullablee_lambda[3/16]? Lower uncertainty in lambdaumstat.errorintnullableSimbadSimbad column added by the CDSmeta.ref.urlchar