The SCUBA HAlf Degree Extragalactic Survey (SHADES) - IV: Radio-mm-FIR photometric redshifts

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dc.creatorAretxaga, Itziar
dc.creatorHughes, David H.
dc.creatorCoppin, Kristen
dc.creatorMortier, Angela M. J.
dc.creatorWagg, Jeff
dc.creatorDunlop, James S.
dc.creatorChapin, Edward L.
dc.creatorEales, Stephen A.
dc.creatorGaztanaga, Enrique
dc.creatorHalpern, Mark
dc.creatorIvison, Rob J.
dc.creatorvan Kampen, Eelco
dc.creatorScott, Douglas
dc.creatorSerjeant, Stephen
dc.creatorSmail, Ian
dc.creatorBabbedge, Thomas
dc.creatorBenson, Andrew J.
dc.creatorChapman, Scott
dc.creatorClements, David L.
dc.creatorDunne, Loretta
dc.creatorDye, Simon
dc.creatorFarrah, Duncan
dc.creatorJarvis, Matthew J.
dc.creatorMann, Robert G.
dc.creatorPope, Alexandra
dc.creatorPriddey, Robert
dc.creatorRawlings, Steve
dc.creatorSeigar, Marc
dc.creatorSilva, Laura
dc.creatorSimpson, Chris
dc.creatorVaccari, Mattia
dc.date2007-02-20
dc.date2007-05-31
dc.date.accessioned2026-07-07T11:00:53Z
dc.date.available2026-07-07T11:00:53Z
dc.descriptionWe present the redshift distribution of the SHADES galaxy population based on the rest-frame radio-mm-FIR colours of 120 robustly detected 850um sources in the Lockman Hole East (LH) and Subaru XMM-Newton Deep Field (SXDF). The redshift distribution derived from the full SED information is shown to be narrower than that determined from the radio-submm spectral index, as more photometric bands contribute to a higher redshift accuracy. The redshift distribution of sources derived from at least two photometric bands peaks at z ~ 2.4 and has a near-Gaussian distribution, with 50 per cent (interquartile range) of sources at z=1.8-3.1. We find a statistically-significant difference between the measured redshift distributions in the two fields; the SXDF peaking at a slightly lower redshift (median z ~ 2.2) than the LH (median z ~ 2.7), which we attribute to the noise-properties of the radio observations. We demonstrate however that there could also be field-to-field variations that are consistent with the measured differences in the redshift distributions, and hence, that the incomplete area observed by SHADES with SCUBA, despite being the largest sub-mm survey to date, may still be too small to fully characterize the bright sub-mm galaxy population. Finally we present a brief comparison with the predicted, or assumed, redshift distributions of sub-mm galaxy formation and evolution models, and we derive the contribution of these SHADES sources and the general sub-mm galaxy population to the star formation-rate density at different epochs.
dc.descriptionMNRAS, accepted (22 pages, 9 figures, 5 tables). Revised version, minor modifications and 2 extra figures
dc.identifierhttps://arxiv.org/abs/astro-ph/0702503
dc.identifierhttp://arxiv.org/abs/astro-ph/0702503
dc.identifierMon.Not.Roy.Astron.Soc.379:1571-1588,2007
dc.identifierdoi:10.1111/j.1365-2966.2007.12036.x
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/187797
dc.subjectAstrophysics
dc.titleThe SCUBA HAlf Degree Extragalactic Survey (SHADES) - IV: Radio-mm-FIR photometric redshifts
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