FIRST REDSHIFT DETERMINATION OF AN OPTICALLY/ULTRAVIOLET FAINT SUBMILLIMETER GALAXY USING CO EMISSION LINES

A. Weiß, R. J. Ivison, D. Downes, F. Walter, M. Cirasuolo, K. M. Menten

Research output: Contribution to journalArticlepeer-review

Abstract

We report the redshift of a distant, highly obscured submillimeter galaxy (SMG), based entirely on the detection of its CO line emission. We have used the newly commissioned Eight MIxer Receiver at the IRAM 30 m telescope, with its 8 GHz of instantaneous dual-polarization bandwidth, to search the 3 mm atmospheric window for CO emission from SMM J14009+0252, a bright SMG detected in SCUBA Lens Survey. A detection of the CO(3-2) line in the 3 mm window was confirmed via observations of CO(5-4) in the 2 mm window. Both lines constrain the redshift of SMM J14009+0252 to z = 2.9344, with high precision (δz = 2 × 10-4). Such observations will become routine in determining redshifts in the era of ALMA.
Original languageEnglish
Pages (from-to)L45–L47
JournalAstrophysical Journal
Volume705
Issue number1
DOIs
Publication statusPublished - 1 Nov 2009

Keywords

  • cosmology: observations
  • galaxies: evolution
  • galaxies: high-redshift
  • galaxies: starburst
  • ISM: molecules

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