ON THE NATURE OF THE FIRST GALAXIES SELECTED AT 350 mu m

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dc.contributor.authorKhan, Sophia A.
dc.contributor.authorChanial, Pierre F.
dc.contributor.authorWillner, S. P.
dc.contributor.authorPearson, Chris P.
dc.contributor.authorAshby, M. L. N.
dc.contributor.authorBenford, Dominic J.
dc.contributor.authorClements, David L.
dc.contributor.authorDye, Simon
dc.contributor.authorFarrah, Duncan
dc.contributor.authorFazio, G. G.
dc.contributor.authorHuang, J. S.
dc.contributor.authorLebouteiller, V.
dc.contributor.authorLe Floc'h, Emeric
dc.contributor.authorMainetti, Gabriele
dc.contributor.authorMoseley, S. Harvey
dc.contributor.authorNegrello, Mattia
dc.contributor.authorSerjeant, Stephen
dc.contributor.authorShafer, Richard A.
dc.contributor.authorStaguhn, Johannes
dc.contributor.authorSumner, Timothy J.
dc.contributor.authorVaccari, Mattia
dc.date.accessioned2024-01-10T12:41:07Z
dc.date.available2024-01-10T12:41:07Z
dc.date.issued2009
dc.description.abstractWe present constraints on the nature of the first galaxies selected at 350 mu m. The sample includes galaxies discovered in the deepest blank-field survey at 350 mu m (in the Bootes Deep Field) and also later serendipitous detections in the Lockman Hole. In determining multiwavelength identifications, the 350 mu m position and map resolution of the second generation Submillimeter High Angular Resolution Camera are critical, especially in the cases where multiple radio sources exist and the 24 mu m counterparts are unresolved. Spectral energy distribution templates are fitted to identified counterparts, and the sample is found to comprise IR-luminous galaxies at 1 < z < 3 predominantly powered by star formation. The first spectrum of a 350 mu m selected galaxy provides an additional confirmation, showing prominent dust grain features typically associated with star-forming galaxies. Compared to submillimeter galaxies selected at 850 and 1100 mu m, galaxies selected at 350 mu m have a similar range of far-infrared color temperatures. However, no 350 mu m selected sources are reliably detected at 850 or 1100 mu m. Galaxies in our sample with redshifts 1 < z < 2 show a tight correlation between the far-and mid-infrared flux densities, but galaxies at higher redshifts show a large dispersion in their mid-to far-infrared colors. This implies a limit to which the mid-IR emission traces the far-IR emission in star-forming galaxies. The 350 mu m flux densities (15 < S(350) < 40 mJy) place these objects near the Herschel/SPIRE 350 mu m confusion threshold, with the lower limit on the star formation rate density suggesting the bulk of the 350 mu m contribution will come from less luminous infrared sources and normal galaxies. Therefore, the nature of the dominant source of the 350 mu m background-star-forming galaxies in the epoch of peak star formation in the universe-could be more effectively probed using ground-based instruments with their angular resolution and sensitivity offering significant advantages over space-based imaging.
dc.description.funderNSF
dc.description.funderNational Aeronautics and Space Administration
dc.description.funderFONDECYT
dc.description.funderALMA-Conicyt
dc.description.funderScience and Technology Facilities Council
dc.description.funderUK Space Agency
dc.fechaingreso.objetodigital2024-04-26
dc.format.extent9 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1088/0004-637X/706/1/319
dc.identifier.issn0004-637X
dc.identifier.urihttps://doi.org/10.1088/0004-637X/706/1/319
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/77384
dc.identifier.wosidWOS:000271538900024
dc.information.autorucFísica;Khan S;S/I;1005055
dc.issue.numero1
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final327
dc.pagina.inicio319
dc.publisherIOP PUBLISHING LTD
dc.revistaASTROPHYSICAL JOURNAL
dc.rightsacceso restringido
dc.subjectgalaxies: high-redshift
dc.subjectgalaxies: starburst
dc.subjectinfrared: galaxies
dc.subjectsubmillimeter
dc.subjectSPITZER-SPACE-TELESCOPE
dc.subjectDEGREE EXTRAGALACTIC SURVEY
dc.subjectSTAR-FORMING GALAXIES
dc.subjectSPECTRAL ENERGY-DISTRIBUTIONS
dc.subjectMULTIBAND IMAGING PHOTOMETER
dc.subjectDEEP SUBMILLIMETER SURVEY
dc.subjectARRAY CAMERA IRAC
dc.subject24 MICRON SOURCES
dc.subjectHIGH-REDSHIFT
dc.subjectSHARC-II
dc.titleON THE NATURE OF THE FIRST GALAXIES SELECTED AT 350 mu m
dc.typeartículo
dc.volumen706
sipa.codpersvinculados1005055
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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