J/ApJ/812/43ivo://CDS.VizieR/J/ApJ/812/43doi:10.26093/cds/vizier.18120043CDSBussmann R.S.Riechers D.Fialkov A.Scudder J.Hayward C.C.,Cowley W.I.Bock J.Calanog J.Chapman S.C.Cooray A.De Bernardis F.,Farrah D.Fu H.Gavazzi R.Hopwood R.Ivison R.J.Jarvis M.Lacey C.,Loeb A.Oliver S.J.Perez-Fournon I.Rigopoulou D.Roseboom I.G.,Scott D.Smith A.J.Vieira J.D.Wang L.Wardlow J.2018-02-05T14:06:32Z2016-02-23T08:12:58ZCDS support team

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

cds-question@unistra.frgalaxiesinfrared-sourcesmillimeter-astronomyphotometrysubmillimeter-astronomygravitational-lensingsurveysThe Herschel Multi-tiered Extragalactic Survey (HerMES, Oliver et al. 2012, VIII/95) has identified large numbers of dusty star-forming galaxies (DSFGs) over a wide range in redshift. A detailed understanding of these DSFGs is hampered by the limited spatial resolution of Herschel. We present 870{mu}m 0.45" resolution imaging obtained with the Atacama Large Millimeter/submillimeter Array (ALMA) of a sample of 29 HerMES DSFGs that have far-infrared (FIR) flux densities that lie between the brightest of sources found by Herschel and fainter DSFGs found via ground-based surveys in the submillimeter region. The ALMA imaging reveals that these DSFGs comprise a total of 62 sources (down to the 5{sigma} point-source sensitivity limit in our ALMA sample; {sigma}~0.2mJy). Optical or near-infrared imaging indicates that 36 of the ALMA sources experience a significant flux boost from gravitational lensing ({mu}>1.1), but only six are strongly lensed and show multiple images. We introduce and make use of uvmcmcfit, a general-purpose and publicly available Markov chain Monte Carlo visibility-plane analysis tool to analyze the source properties. Combined with our previous work on brighter Herschel sources, the lens models presented here tentatively favor intrinsic number counts for DSFGs with a break near 8mJy at 880um and a steep fall-off at higher flux densities. Nearly 70% of the Herschel sources break down into multiple ALMA counterparts, consistent with previous research indicating that the multiplicity rate is high in bright sources discovered in single-dish submillimeter or FIR surveys. The ALMA counterparts to our Herschel targets are located significantly closer to each other than ALMA counterparts to sources found in the LABOCA ECDFS Submillimeter Survey. Theoretical models underpredict the excess number of sources with small separations seen in our ALMA sample. The high multiplicity rate and small projected separations between sources seen in our sample argue in favor of interactions and mergers plausibly driving both the prodigious emission from the brightest DSFGs as well as the sharp downturn above S880=8mJy.2015ApJ...812...43Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/812/43CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVI/139 : Herschel Observation Log (Herschel Science Centre, 2013)III/334 : VISTA Deep Extragalactic Observations (VIDEO) (Jarvis+, 2013)VIII/95 : Herschel Multi-tiered Extragalactic Survey (Oliver+, 2012)VIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)J/MNRAS/442/577 : Selected ALESS submm galaxies radio data (Thomson+, 2014)J/ApJ/768/91 : ALMA observations of LESS submm galaxies (Hodge+, 2013)J/ApJ/761/140 : Spectroscopy of Herschel-SPIRE galaxies (Casey+, 2012)J/ApJ/745/95 : Herschel FIR+submm photom. of KINGFISH sample (Dale+, 2012)J/A+A/543/A161 : Submm obs. of 323 HRS nearby galaxies (Ciesla+, 2012)J/ApJ/707/1201 : LABOCA ECDFS Submillimeter Survey (LESS) (Weiss+, 2009)J/MNRAS/385/2225 : AzTEC millimetre survey of COSMOS field (Scott+, 2008)J/MNRAS/380/199 : SCUBA Half-Degree Extragalactic Survey. III (Ivison+, 2007)J/ApJ/622/772 : Redshift survey of submillimeter galaxies (Chapman+, 2005)http://hermes.sussex.ac.uk/ : HerMES project home pagehttp://hedam.lam.fr/HerMES/ : Herschel Database in Marseille - HerMES datahttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/812/43https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/812/43http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/812/43https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/812/43https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/812/43http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/812/43GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/812/43/table1 (Observed positions and flux densities of ALMA sources for 29 HerMES dusty star-forming galaxies (DSFGs))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/812/43/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/812/43/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/812/43/table1?GETtext/xml+votable180.050000true9.59827917-43.617819440.0055555555555555566/17669 17671 17677 17688 17692 17693 17694 17713 17716 17719 27258 27259 33933 33943 33945 33946 33948 33986 35390 35931 35935 359572.283270615984385e-22 7.945784137810954e-22https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/812/43?format=asciiInfraredRadiodefaultJ/ApJ/812/43/table1Observed positions and flux densities of ALMA sources for 29 HerMES dusty star-forming galaxies (DSFGs)SimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint1HerMESHerschel S250 Source (JHHMMSS.s+DDMMSS) (1)meta.id.parentcharALMAShort Name; ALMA Sourcemeta.id;meta.maincharRAJ2000870um Hour of Right Ascension (J2000) (2)pos.eq.ra;meta.mainDEJ2000870um Degree of Declination (J2000) (2)pos.eq.dec;meta.mainS250[19/179]? Herschel SPIRE 250um flux densitymJyphot.flux.density;em.mm.750-1500GHzintnullablee_S250[6/7]? Uncertainty in S250 (3)mJystat.errorintnullableS350[39/188]? Herschel SPIRE 350um flux densitymJyphot.flux.density;em.mm.750-1500GHzintnullablee_S350[5/8]? Uncertainty in S350 (3)mJystat.errorintnullableS500[52/134]? Herschel SPIRE 500um flux densitymJyphot.flux.density;em.mm.400-750GHzintnullablee_S500[5/11]? Uncertainty in S500 (3)mJystat.errorintnullableS870[0.9/63.4] ALMA 870um flux densitymJyphot.flux.density;em.mm.200-400GHzfloate_S870[0.1/1.4] Uncertainty in S870 (3)mJystat.errorfloatsig[0.1/0.3]? ALMA map statistical rms, {sigma}mJystat.errorfloatnullablea[0.4/0.7]? ALMA map synthesized beam major axis FWHM ({Omega}a)arcsecphys.angSize;instr.beamfloatnullableb[0.3/0.5]? ALMA map synthesized beam minor axis FWHM ({Omega}b)arcsecphys.angSize;instr.beamfloatnullableGrade[ACX] Lens Grade (A=strongly lensed; C=weakly lensed; X=unlensed)meta.notecharL? Number of lens data (link to table 2); column added by CDSmeta.ref.urlintnullableIntDisplay the intrinsic properties of the ALMA sources (table 3)meta.ref.urlcharJ/ApJ/812/43/table2Lens properties from parameters of model fits to ALMA sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameShort name of the lensmeta.id;meta.maincharoRA[-3.6/4.5] Right ascension offset (1)arcsecpos.eq.ra;arith.difffloate_oRA[0.01/0.2]? oRA uncertainty (2)arcsecstat.errorfloatnullableoDE[-4.5/3] Declination offset (1)arcsecpos.eq.dec;arith.difffloate_oDE[0.01/0.3]? oDE uncertainty (2)arcsecstat.errorfloatnullabletheta[0.2/2] Angular Einstein radius {theta}_E_ (3)arcsecphys.angSize;srcfloate_theta[0.004/0.008]? theta uncertainty (2)arcsecstat.error;pos.posAngfloatnullableqlens[0.5/1] Axial ratio of the lens (q_lens_=b_lens_/a_lens_)phys.size.axisRatiofloate_qlens[0.006/0.2]? qlens uncertainty (2)stat.errorfloatnullablephi[0/176] Position angle of the lens ({phi}_lens_)degpos.posAnginte_phi[7/19]? phi uncertainty (2)degstat.errorintnullableJ/ApJ/812/43/table3Intrinsic properties from parameters of model fits to ALMA sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameShort ALMA namemeta.id;meta.maincharoRA[-4.9/7.7] Right ascension offset (1)arcsecpos.eq.ra;arith.difffloate_oRA[0.003/0.3]? oRA uncertaintyarcsecstat.errorfloatnullableoDE[-7.3/4.7] Declination offset (1)arcsecpos.eq.dec;arith.difffloate_oDE[0.003/0.3]? oDE uncertaintyarcsecstat.errorfloatnullableS870[0.8/17.6] Total intrinsic 870um flux densitymJyphot.flux.density;em.mm.200-400GHzfloate_S870[0.01/1.4] S870 uncertaintymJystat.errorfloatrs[0.01/0.5] Effective radius length (2)arcsecphys.angSizefloate_rs[0.003/0.3] rs uncertaintyarcsecstat.errorfloatqs[0.2/0.9] Axial ratio (q_s_=b_s_/a_s_)phys.size.axisRatiofloate_qs[0/0.3] qs uncertaintystat.errorfloatphi[-25/178] Position angle ({phi}_s_); degrees east of northdegpos.posAnginte_phi[1/65] phi uncertaintydegstat.errorintmu870[0/27.2]? Magnification factor at 870um ({mu}_870_)stat.paramfloatnullablee_mu870[0.03/4.7]? mu870 uncertaintystat.errorfloatnullable