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HerMES: candidate gravitationally lensed galaxies and lensing statistics at submillimeter wavelengths

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dc.contributorVirginia Techen
dc.contributor.authorWardlow, J. L.en
dc.contributor.authorCooray, A.en
dc.contributor.authorDe Bernardis, F.en
dc.contributor.authorAmblard, A.en
dc.contributor.authorArumugam, V.en
dc.contributor.authorAussel, H.en
dc.contributor.authorBaker, A. J.en
dc.contributor.authorBethermin, M.en
dc.contributor.authorBlundell, R.en
dc.contributor.authorBock, J.en
dc.contributor.authorBoselli, A.en
dc.contributor.authorBridge, C. R.en
dc.contributor.authorBuat, V.en
dc.contributor.authorBurgarella, D.en
dc.contributor.authorBussmann, R. S.en
dc.contributor.authorCabrera-Lavers, A.en
dc.contributor.authorCalanog, J. A.en
dc.contributor.authorCarpenter, J. M.en
dc.contributor.authorCasey, C. M.en
dc.contributor.authorCastro-Rodriguez, N.en
dc.contributor.authorCava, A.en
dc.contributor.authorChanial, P.en
dc.contributor.authorChapin, E.en
dc.contributor.authorChapman, S. C.en
dc.contributor.authorClements, D. L.en
dc.contributor.authorConley, A.en
dc.contributor.authorCox, P.en
dc.contributor.authorDowell, C. D.en
dc.contributor.authorDye, S.en
dc.contributor.authorEales, S.en
dc.contributor.authorFarrah, D.en
dc.contributor.authorFerrero, P.en
dc.contributor.authorFranceschini, A.en
dc.contributor.authorFrayer, D. T.en
dc.contributor.authorFrazer, C.en
dc.contributor.authorFu, H.en
dc.contributor.authorGavazzi, R.en
dc.contributor.authorGlenn, J.en
dc.contributor.authorSolares, E. A. G.en
dc.contributor.authorGriffin, M.en
dc.contributor.authorGurwell, M. A.en
dc.contributor.authorHarris, A. I.en
dc.contributor.authorHatziminaoglou, E.en
dc.contributor.authorHopwood, R.en
dc.contributor.authorHyde, A.en
dc.contributor.authorIbar, E.en
dc.contributor.authorIvison, R. J.en
dc.contributor.authorKim, S.en
dc.contributor.authorLagache, G.en
dc.contributor.authorLevenson, L.en
dc.contributor.authorMarchetti, L.en
dc.contributor.authorMarsden, G.en
dc.contributor.authorMartinez-Navajas, P.en
dc.contributor.authorNegrello, M.en
dc.contributor.authorNeri, R.en
dc.contributor.authorNguyen, H. T.en
dc.contributor.authorO'Halloran, B.en
dc.contributor.authorOliver, S. J.en
dc.contributor.authorOmont, A.en
dc.contributor.authorPage, M. J.en
dc.contributor.authorPanuzzo, P.en
dc.contributor.authorPapageorgiou, A.en
dc.contributor.authorPearson, C. P.en
dc.contributor.authorPerez-Fournon, I.en
dc.contributor.authorPohlen, M.en
dc.contributor.authorRiechers, D. A.en
dc.contributor.authorRigopoulou, D.en
dc.contributor.authorRoseboom, I. G.en
dc.contributor.authorRowan-Robinson, M.en
dc.contributor.authorSchulz, B.en
dc.contributor.authorScott, D.en
dc.contributor.authorScoville, N.en
dc.contributor.authorSeymour, N.en
dc.contributor.authorShupe, D. L.en
dc.contributor.authorSmith, A. J.en
dc.contributor.authorStreblyanska, A.en
dc.contributor.authorStrom, A.en
dc.contributor.authorSymeonidis, M.en
dc.contributor.authorTrichas, M.en
dc.contributor.authorVaccari, M.en
dc.contributor.authorVieira, J. D.en
dc.contributor.authorViero, M.en
dc.contributor.authorWang, L.en
dc.contributor.authorXu, C. K.en
dc.contributor.authorYan, L.en
dc.contributor.authorZemcov, M.en
dc.contributor.departmentPhysicsen
dc.date.accessed2014-02-05en
dc.date.accessioned2014-02-25T13:57:06Zen
dc.date.available2014-02-25T13:57:06Zen
dc.date.issued2013-01en
dc.description.abstractWe present a list of 13 candidate gravitationally lensed submillimeter galaxies (SMGs) from 95 deg(2) of the Herschel Multi-tiered Extragalactic Survey, a surface density of 0.14 +/- 0.04 deg(-2). The selected sources have 500 mu m flux densities (S-500) greater than 100 mJy. Gravitational lensing is confirmed by follow-up observations in 9 of the 13 systems (70%), and the lensing status of the four remaining sources is undetermined. We also present a supplementary sample of 29 (0.31 +/- 0.06 deg(-2)) gravitationally lensed SMG candidates with S-500 = 80-100 mJy, which are expected to contain a higher fraction of interlopers than the primary candidates. The number counts of the candidate lensed galaxies are consistent with a simple statistical model of the lensing rate, which uses a foreground matter distribution, the intrinsic SMG number counts, and an assumed SMG redshift distribution. The model predicts that 32%-74% of our S-500 >= 100 mJy candidates are strongly gravitationally lensed (mu >= 2), with the brightest sources being the most robust; this is consistent with the observational data. Our statistical model also predicts that, on average, lensed galaxies with S-500 = 100 mJy are magnified by factors of similar to 9, with apparently brighter galaxies having progressively higher average magnification, due to the shape of the intrinsic number counts. 65% of the sources are expected to have intrinsic 500 mu m flux densities less than 30 mJy. Thus, samples of strongly gravitationally lensed SMGs, such as those presented here, probe below the nominal Herschel detection limit at 500 mu m. They are good targets for the detailed study of the physical conditions in distant dusty, star-forming galaxies, due to the lensing magnification, which can lead to spatial resolutions of similar to 0 ''.01 in the source plane.en
dc.description.sponsorshipSmithsonian Institutionen
dc.description.sponsorshipAcademia Sinicaen
dc.description.sponsorshipCARMAen
dc.description.sponsorshipGordon and Betty Moore Foundationen
dc.description.sponsorshipKenneth T. and Eileen L. Norris Foundationen
dc.description.sponsorshipJames S. McDonnell Foundationen
dc.description.sponsorshipAssociates of the California Institute of Technologyen
dc.description.sponsorshipUniversity of Chicagoen
dc.description.sponsorshipstates of California, Illinois, and Marylanden
dc.description.sponsorshipNational Science Foundationen
dc.description.sponsorshipNational Aeronautics and Space Administrationen
dc.description.sponsorshipCSA (Canada)en
dc.description.sponsorshipNAOC (China)en
dc.description.sponsorshipCEA, CNES, CNRS (France)en
dc.description.sponsorshipASI (Italy)en
dc.description.sponsorshipMCINN (Spain)en
dc.description.sponsorshipSNSB (Sweden)en
dc.description.sponsorshipSTFC, UKSA (UK)en
dc.description.sponsorshipNASA (USA)en
dc.description.sponsorshipNSF AST-0645427en
dc.description.sponsorshipScience and Technology Facilities Councilen
dc.description.sponsorshipST/F002858/1, ST/I000976/1en
dc.description.sponsorshipItalian Space Agency I/005/07/0en
dc.description.sponsorshipNASA through a Spitzer Space Telescope granten
dc.description.sponsorshipNASA through a grant from the Space Telescope Science Institute GO-12194, GO-12488en
dc.description.sponsorshipNASA NAS5-26555en
dc.identifier.citationJulie L. Wardlow et al. 2013. "HerMES: candidate gravitationally lensed galaxies and lensing statistics at submillimeter wavelengths," ApJ 762 59 doi:10.1088/0004-637X/762/1/59en
dc.identifier.doihttps://doi.org/10.1088/0004-637x/762/1/59en
dc.identifier.issn0004-637Xen
dc.identifier.urihttp://hdl.handle.net/10919/25558en
dc.identifier.urlhttp://iopscience.iop.org/0004-637X/762/1/59/pdf/0004-637X_762_1_59.pdfen
dc.language.isoen_USen
dc.publisherIOP Publishing Ltd.en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectgravitational lensing: strongen
dc.subjectsubmillimeter: galaxiesen
dc.subjectspectroscopically selected sampleen
dc.subjectherschel-spire instrumenten
dc.subjectmass-density profileen
dc.subjectsouth-pole telescopeen
dc.subjectwide-field surveyen
dc.subjectall-skyen
dc.subjectsurveyen
dc.subjectnumber countsen
dc.subjectacs surveyen
dc.subjectdark-matteren
dc.subjectextragalactic surveyen
dc.titleHerMES: candidate gravitationally lensed galaxies and lensing statistics at submillimeter wavelengthsen
dc.title.serialAstrophysical Journalen
dc.typeArticle - Refereeden

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