Show simple item record

dc.contributor.authorIvison, R. J.en_US
dc.contributor.authorSmail, Ianen_US
dc.contributor.authorDunlop, J. S.en_US
dc.contributor.authorGreve, T. R.en_US
dc.contributor.authorSwinbank, A. M.en_US
dc.contributor.authorStevens, J. A.en_US
dc.contributor.authorMortier, A. M. J.en_US
dc.contributor.authorSerjeant, S.en_US
dc.contributor.authorTargett, T. A.en_US
dc.contributor.authorBertoldi, F.en_US
dc.contributor.authorBlain, A. W.en_US
dc.contributor.authorChapman, S. C.en_US
dc.date.accessioned2014-03-12T19:20:54Z
dc.date.available2014-03-12T19:20:54Z
dc.date.issued2005-12-11en_US
dc.identifier.citationIvison, R. J., Ian Smail, J. S. Dunlop, T. R. Greve, et al. 2005. "A robust sample of submillimetre galaxies: constraints on the prevalence of dusty, high-redshift starbursts." Monthly Notices of the Royal Astronomical Society 364(3): 1025-1040en_US
dc.identifier.issn0035-8711en_US
dc.identifier.urihttp://dx.doi.org/10.1111/j.1365-2966.2005.09639.xen_US
dc.identifier.urihttp://hdl.handle.net/10222/45352
dc.description.abstractThe modest significance of most sources detected in current submm surveys can potentially compromise some analyses due to the inclusion of spurious sources in catalogues typically selected at >3.0-3.5sigma. Here, we develop and apply a dual-survey extraction technique to SCUBA and MAMBO images of the Lockman Hole. Cut above 5sigma, our catalogue of SMGs is more robust than previous samples, with a reduced likelihood of real, but faint SMGs (beneath and around the confusion limit) entering via superposition with noise. The effective flux limit of the survey is well matched to our deep 1.4-GHz image. The former is sensitive to luminous, dusty galaxies at extreme redshifts whilst the latter probes the z>3) are unlikely to make up more than ~10% of the bright SMG population. This implies that almost all of the bright SMG population is amenable to study via the deepest current radio imaging. We use these radio counterparts to provide an empirical calibration of the positional uncertainty in SMG catalogues. We then go on to outline the acquisition of redshifts for radio-identified SMGs, from sample selection in the submm, to counterpart selection in the radio and optical/IR, to slit placement on spectrograph masks. We determine a median of z=2.05 +/- 0.41 from a sample of six secure redshifts for unambigious radio-identified submm sources and z=2.14 +/- 0.27 when we include submm sources with multiple radio counterparts and/or less reliable redshifts. These figures are consistent with previous estimates, suggesting that our knowledge of the median redshift of bright SMGs population has not been biased by the low significance of the source catalogues employed.en_US
dc.titleA robust sample of submillimetre galaxies: constraints on the prevalence of dusty, high-redshift starburstsen_US
dc.title.alternativeMonthly Notices of the Royal Astronomical Societyen_US
dc.typearticleen_US
dc.identifier.volume364en_US
dc.identifier.issue3en_US
dc.identifier.startpage1025en_US
 Find Full text

Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record