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dc.contributor.authorSantini, Pen
dc.contributor.authorCastellano, Men
dc.contributor.authorFontana, Aen
dc.contributor.authorMerlin, Een
dc.contributor.authorMaiolino, Robertoen
dc.contributor.authorMason, Cen
dc.contributor.authorMignano, Aen
dc.contributor.authorPilo, Sen
dc.contributor.authorAmorin Barbieri, Ricardoen
dc.contributor.authorBerta, Sen
dc.contributor.authorBourne, Nen
dc.contributor.authorCalura, Fen
dc.contributor.authorDaddi, Een
dc.contributor.authorElbaz, Den
dc.contributor.authorGrazian, Aen
dc.contributor.authorMagliocchetti, Men
dc.contributor.authorMichałowski, MJen
dc.contributor.authorPentericci, Len
dc.contributor.authorPozzi, Fen
dc.contributor.authorRodighiero, Gen
dc.contributor.authorSchreiber, Cen
dc.contributor.authorValiante, Ren
dc.date.accessioned2017-01-12T16:05:35Z
dc.date.available2017-01-12T16:05:35Z
dc.date.issued2016-12-01en
dc.identifier.issn0004-6361
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/261846
dc.description.abstractWe present the serendipitous ALMA detection of a faint submillimeter galaxy (SMG) lensed by a foreground $\textit{z}$ ∼ 1 galaxy. By optimizing the source detection to deblend the system, we accurately build the full spectral energy distribution of the distant galaxy from the I814 band to radio wavelengths. It is extremely red, with a $\textit{I-K}$ colour larger than 2.5. We estimate a photometric redshift of 3.28 and determine the physical parameters. The distant galaxy turns out to be magnified by the foreground lens by a factor of ∼1.5, which implies an intrinsic $\textit{K}$$_{s}$-band magnitude of ∼24.5, a submillimeter flux at 870 $\textit{μ}$m of ∼2.5 mJy and a SFR of ∼150-300 $\textit{M}$$_{⊙}$/yr, depending on the adopted tracer. These values place our source towards the faint end of the distribution of observed SMGs, and in particular among the still few faint SMGs with a fully characterized spectral energy distribution, which allows us not only to accurately estimate its redshift, but also to measure its stellar mass and other physical properties. The galaxy studied in this work is a representative of the population of faint SMGs, of which only few objects are known to date, that are undetected in optical and therefore are not typically accounted for when measuring the cosmic star formation history (SFH). This faint galaxy population thus likely represents an important and missing piece in our understanding of the cosmic SFH. Its observation and characterization is of major importance to achieve a solid picture of galaxy evolution.
dc.description.sponsorshipThe research leading to these results has received funding from the European Union Seventh Framework Programme ASTRODEEP (FP7/2007-2013) under grant agreement No. 312725. R.M. and R.A. acknowledge support from the ERC Advanced Grant 695671 QUENCH.
dc.languageengen
dc.language.isoenen
dc.publisherEDP Sciences
dc.titleCharacterizing elusive, faint dusty star-forming galaxies: A lensed, optically undetected ALMA galaxy at z ∼ 3.3en
dc.typeArticle
prism.numberA75en
prism.publicationDate2016en
prism.publicationNameAstronomy and Astrophysicsen
prism.volume596en
dc.identifier.doi10.17863/CAM.7066
dcterms.dateAccepted2016-10-24en
rioxxterms.versionofrecord10.1051/0004-6361/201629339en
rioxxterms.versionVoRen
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2016-12-01en
dc.contributor.orcidMaiolino, Roberto [0000-0002-4985-3819]
dc.contributor.orcidAmorin Barbieri, Ricardo [0000-0001-5758-1000]
dc.identifier.eissn1432-0746
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idECH2020 EUROPEAN RESEARCH COUNCIL (ERC) (695671)
pubs.funder-project-idSTFC (ST/K003119/1)
pubs.funder-project-idSTFC (ST/M001172/1)
cam.issuedOnline2016-12-02en
cam.orpheus.successThu Jan 30 12:56:35 GMT 2020 - The item has an open VoR version.*
rioxxterms.freetoread.startdate2100-01-01


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