Journal
ASTROPHYSICAL JOURNAL LETTERS
Volume 705, Issue 1, Pages L45-L47Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/705/1/L45
Keywords
cosmology: observations; galaxies: evolution; galaxies: high-redshift; galaxies: starburst; ISM: molecules
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Funding
- INSU/CNRS (France)
- MPG (Germany)
- IGN (Spain)
- Science and Technology Facilities Council [PP/E001181/1, ST/G007039/1] Funding Source: researchfish
- STFC [ST/G007039/1] Funding Source: UKRI
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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 (delta z = 2 x 10(-4)). Such observations will become routine in determining redshifts in the era of ALMA.
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