University of Hertfordshire

From the same journal

From the same journal

By the same authors

  • E. A. Cooke
  • Ian Smail
  • A. M. Swinbank
  • S. M. Stach
  • FangXia An
  • B. Gullberg
  • O. Almaini
  • C. J. Simpson
  • J. L. Wardlow
  • A. W. Blain
  • S. C. Chapman
  • Chian-Chou Chen
  • C. J. Conselice
  • K. E. K. Coppin
  • D. Farrah
  • D. T. Maltby
  • M. J. Michalowski
  • D. Scott
  • A. P. Thomson
  • P. van der Werf
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Original languageEnglish
Article number100
JournalThe Astrophysical Journal
Journal publication date10 Jul 2018
Volume861
Issue2
DOIs
StatePublished - 10 Jul 2018

Abstract

We report the results of a search for serendipitous [CII] 157.74$\mu$m emitters at $z\sim4.4$-$4.7$ using the Atacama Large Millimeter/submillimeter Array (ALMA). The search exploits the AS2UDS continuum survey, which covers ~50 arcmin$^2$ of the sky towards 695 luminous ($S_{870}\gtrsim1$mJy) submillimeter galaxies (SMGs), selected from the SCUBA-2 Cosmology Legacy Survey (S2CLS) 0.96deg$^2$ Ultra Deep Survey (UDS) field. We detect ten candidate line emitters, with an expected false detection rate of ten percent. All of these line emitters correspond to 870$\mu$m continuum-detected sources in AS2UDS. The emission lines in two emitters appear to be high-J CO, but the remainder have multi-wavelength properties consistent with [CII] from $z\simeq4.5$ galaxies. Using our sample, we place a lower limit of $>5\times10^{-6}$Mpc$^{-3}$ on the space density of luminous ($L_{\rm IR} \simeq 10^{13}$Lsun) SMGs at $z=4.40$-$4.66$, suggesting $\ge7$percent of SMGs with $S_{870\mu{\rm m}}\gtrsim1$mJy lie at $4

Notes

© 2018 The American Astronomical Society. All rights reserved. 16 pages, 10 figures, accepted for publication in ApJ

ID: 14855395