NOEMA redshift measurements of bright Herschel galaxies
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Date
2020
Authors
Journal Title
Journal ISSN
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Publisher
EDP Sciences
Abstract
Using the IRAM NOrthern Extended Millimeter Array (NOEMA), we conducted a program to measure redshifts for 13 bright galaxies detected in the Herschel Astrophysical Large Area Survey with S500 μm ≥ 80 mJy. We report reliable spectroscopic redshifts for 12 individual sources, which are derived from scans of the 3 and 2 mm bands, covering up to 31 GHz in each band, and are based on the detection of at least two emission lines. The spectroscopic redshifts are in the range 2.08 < z < 4.05 with a median value of z = 2.9 ± 0.6. The sources are unresolved or barely resolved on scales of 10 kpc. In one field, two galaxies with different redshifts were detected. In two cases the sources are found to be binary galaxies with projected distances of ∼140 kpc.
Description
Keywords
Galaxies: high-redshift, Galaxies: ISM, Gravitational lensing: strong, Submillimeter: galaxies, Radio lines: ISM
Citation
Marchetti, L. et al. (2020). NOEMA redshift measurements of bright Herschel galaxies. Astronomy & Astrophysics, 635, A7