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dc.contributor.authorCasey, C.
dc.contributor.authorBerta, S.
dc.contributor.authorBéthermin, M.
dc.contributor.authorBock, J.
dc.contributor.authorBridge, C.
dc.contributor.authorBurgarella, D.
dc.contributor.authorChapin, E.
dc.contributor.authorChapman, S.
dc.contributor.authorClements, D.
dc.contributor.authorConley, A.
dc.contributor.authorConselice, C.
dc.contributor.authorCooray, A.
dc.contributor.authorFarrah, D.
dc.contributor.authorHatziminaoglou, E.
dc.contributor.authorIvison, R.
dc.contributor.authorFloc'h, E.
dc.contributor.authorLutz, D.
dc.contributor.authorMagdis, G.
dc.contributor.authorMagnelli, B.
dc.contributor.authorOliver, S.
dc.contributor.authorPage, M.
dc.contributor.authorPozzi, F.
dc.contributor.authorRigopoulou, D.
dc.contributor.authorRiguccini, L.
dc.contributor.authorRoseboom, I.
dc.contributor.authorSanders, D.
dc.contributor.authorScott, D.
dc.contributor.authorSeymour, Nick
dc.contributor.authorValtchanov, I.
dc.contributor.authorVieira, J.
dc.contributor.authorViero, M.
dc.contributor.authorWardlow, J.
dc.date.accessioned2017-01-30T12:03:20Z
dc.date.available2017-01-30T12:03:20Z
dc.date.created2016-01-18T20:00:48Z
dc.date.issued2012
dc.identifier.citationCasey, C. and Berta, S. and Béthermin, M. and Bock, J. and Bridge, C. and Burgarella, D. and Chapin, E. et al. 2012. A population of z> 2 far-infrared Herschel-SPIRE-selected starbursts. Astrophysical Journal. 761 (2).
dc.identifier.urihttp://hdl.handle.net/20.500.11937/17662
dc.identifier.doi10.1088/0004-637X/761/2/139
dc.description.abstract

We present spectroscopic observations for a sample of 36 Herschel-SPIRE 250-500 μm selected galaxies (HSGs) at 2 < z < 5 from the Herschel Multi-tiered Extragalactic Survey. Redshifts are confirmed as part of a large redshift survey of Herschel-SPIRE-selected sources covering ~0.93 deg2 in six extragalactic legacy fields. Observations were taken with the Keck I Low Resolution Imaging Spectrometer and the Keck II DEep Imaging Multi-Object Spectrograph. Precise astrometry, needed for spectroscopic follow-up, is determined by identification of counterparts at 24 μm or 1.4 GHz using a cross-identification likelihood matching method. Individual source luminosities range from log (L IR/L ☉) = 12.5-13.6 (corresponding to star formation rates (SFRs) 500-9000 M ☉ yr–1, assuming a Salpeter initial mass function), constituting some of the most intrinsically luminous, distant infrared galaxies discovered thus far. We present both individual and composite rest-frame ultraviolet spectra and infrared spectral energy distributions. The selection of these HSGs is reproducible and well characterized across large areas of the sky in contrast to most z > 2 HyLIRGs in the literature, which are detected serendipitously or via tailored surveys searching only for high-z HyLIRGs; therefore, we can place lower limits on the contribution of HSGs to the cosmic star formation rate density (SFRD) at (7 ± 2) × 10–3 M ☉ yr–1 h 3 Mpc–3 at z ~ 2.5, which is >10% of the estimated total SFRD of the universe from optical surveys. The contribution at z ~ 4 has a lower limit of 3 × 10–3 M ☉ yr–1 h 3 Mpc–3, 20% of the estimated total SFRD. This highlights the importance of extremely infrared-luminous galaxies with high SFRs to the buildup of stellar mass, even at the earliest epochs.

dc.titleA population of z> 2 far-infrared Herschel-SPIRE-selected starbursts
dc.typeJournal Article
dcterms.source.volume761
dcterms.source.number2
dcterms.source.issn0004-637X
dcterms.source.titleAstrophysical Journal
curtin.departmentDepartment of Physics and Astronomy
curtin.accessStatusFulltext not available


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