Evolution of star formation in the UKIDSS ultra deep survey field - I. Luminosity functions and cosmic star formation rate out of z = 1.6

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dc.contributor.authorDrake, Alyssa B.
dc.contributor.authorSimpson, Chris
dc.contributor.authorCollins, Chris A.
dc.contributor.authorJarvis, Matt
dc.date.accessioned2018-02-07T10:36:32Z
dc.date.available2018-02-07T10:36:32Z
dc.date.issued2013
dc.description.abstractWe present new results on the cosmic star formation history in the SXDS-UDS field out to z = 1.6. We compile narrow-band data from the Subaru Telescope and the Visible and Infrared Survey Telescope for Astronomy (VISTA) in conjunction with broad-band data from the SXDS and UDS, to make a selection of 5725 emission-line galaxies in 12 redshift slices, spanning 10 Gyr of cosmic time. We determine photometric redshifts for the sample using 11-band photometry, and use a spectroscopically confirmed subset to fine tune the resultant redshift distribution.We use themaximum-likelihood technique to determine luminosity functions in each redshift slice and model the selection effects inherent in any narrow-band selection statistically, to obviate the retrospective corrections ordinarily required. The deep narrow band data are sensitive to very low star formation rates (SFRs), and allow an accurate evaluation of the faint end slope of the Schechter function, α.We find that α is particularly sensitive to the assumed faintest broadband magnitude of a galaxy capable of hosting an emission line, and propose that this limit should be empirically motivated. For this analysis we base our threshold on the limiting observed equivalent widths of emission lines in the local Universe. We compute the characteristic SFR of galaxies in each redshift slice, and the integrated SFR density, ρSFR. We find our results to be in good agreement with the literature and parametrize the evolution of the SFR density as ρSFR (1 + z)4.58 confirming a steep decline in star formation activity since z ~ 1.6en_US
dc.description.accreditationWeb of Science
dc.identifier.citationDrake, A.B. et al. (2013). Evolution of star formation in the UKIDSS ultra deep survey field - I. Luminosity functions and cosmic star formation rate out of z = 1.6. Monthly Notices of the Royal Astronomical Society, 433(1): 796 - 811en_US
dc.identifier.issn0035-8711
dc.identifier.urihttp://dx.doi.org/10.1093/mnras/stt775
dc.identifier.urihttp://hdl.handle.net/10566/3486
dc.language.isoenen_US
dc.privacy.showsubmitterFALSE
dc.publisherOUPen_US
dc.rightsThis is the pre-print version (From arXiv:1305.1305) of the article published online at: http://dx.doi.org/10.1093/mnras/stt775
dc.status.ispeerreviewedTRUE
dc.subjectCosmologyen_US
dc.subjectObservationsen_US
dc.subjectSurveysen_US
dc.subjectGalaxiesen_US
dc.subjectEvolutionen_US
dc.subjectHigh-redshiften_US
dc.subjectLuminosity functionsen_US
dc.titleEvolution of star formation in the UKIDSS ultra deep survey field - I. Luminosity functions and cosmic star formation rate out of z = 1.6en_US
dc.typeArticleen_US

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