2018
DOI: 10.1093/mnras/sty691
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Red, redder, reddest: SCUBA-2 imaging of colour-selected Herschel sources

Abstract: High-redshift, luminous, dusty star forming galaxies (DSFGs) constrain the extremity of galaxy formation theories. The most extreme are discovered through follow-up on candidates in large area surveys. Here we present 850 µm SCUBA-2 follow-up observations of 188 red DSFG candidates from the Herschel Multi-tiered Extragalactic Survey (HerMES) Large Mode Survey, covering 274 deg 2 . We detected 87 per cent with a signal-to-noise ratio > 3 at 850 µm. We introduce a new method for incorporating the confusion noise… Show more

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Cited by 29 publications
(45 citation statements)
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“…If the "raw" counts are corrected for flux boosting due to instrumental noise and confusion following some recent studies (Béthermin et al 2017;Donevski et al 2018;Duivenvoorden et al 2018), consistency with predictions based on a universal "Chabrier" IMF is recovered and topheavy IMFs are disfavoured. However, definite conclusions on the abundance of z > 4 sub-mm galaxies are hampered by the large uncertainties on their selection on one side and on corrections for flux boosting on the other side.…”
Section: Discussionmentioning
confidence: 74%
“…If the "raw" counts are corrected for flux boosting due to instrumental noise and confusion following some recent studies (Béthermin et al 2017;Donevski et al 2018;Duivenvoorden et al 2018), consistency with predictions based on a universal "Chabrier" IMF is recovered and topheavy IMFs are disfavoured. However, definite conclusions on the abundance of z > 4 sub-mm galaxies are hampered by the large uncertainties on their selection on one side and on corrections for flux boosting on the other side.…”
Section: Discussionmentioning
confidence: 74%
“…Most of these galaxies have been observed at 850 µm using SCUBA-2, and only 22 sources have spectroscopic redshifts (see references in Bakx et al 2018). We note that the SCUBA-2 flux densities originally reported in Bakx et al (2018) have recently been revised using the method described in Ivison et al (2016) and Duivenvoorden et al (2018), together with the estimated photometric redshifts, as explained in an Erratum to that paper (Bakx et al, in preparation). The SCUBA-2 flux densities and the photometric redshifts z phot listed in Table 1 are the revised values.…”
Section: Sample Selectionmentioning
confidence: 91%
“…Photometric redshifts and integrated properties (e.g., FIR luminosities) are derived from the eazy code (Brammer et al 2008) using representative FIR/sub-mm templates. We refer the reader to Ivison et al (2016) and Duivenvoorden et al (2018) for detailed descriptions of the SCUBA-2/LABOCA observations, flux density measurements, and FIR SED fitting. We adopt the peakvalue photometry and photometric redshifts from both works (listed in Table 1).…”
Section: Spitzer Observations and Source Photometrymentioning
confidence: 99%
“…The reduced maps have an average rms noise level of 2.2 mJy/beam and the beam FWHM sizes are typically 2.5 . The flux densities at 1.1 mm are given in Duivenvoorden et al (2018) and included in the SED fitting below. The details of the observations and data reduction will be presented in Greenslade et al in prep. Additional data with MUSIC/CSO (Sayers et al 2014) and ACT (Su et al 2017) were obtained for 5 HeLMS sources (HELMS RED 1,3,4,6,7).…”
Section: Spitzer Observations and Source Photometrymentioning
confidence: 99%
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