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Candidate gravitationally lensed dusty star-forming galaxies in the Herschel wide area surveys
journal contribution
posted on 2023-06-09, 01:19 authored by H Nayyeri, M Keele, A Cooray, D A Riechers, R J Ivison, A I Harris, D T Frayer, A J Baker, S C Chapman, S Eales, D Farrah, H Fu, L Marchetti, R Marques-Chaves, P I Martinez-Navajas, Seb OliverSeb Oliver, A Omont, I Perez-Fournon, D Scott, M Vaccari, J Vieira, M Viero, L Wang, J WardlowWe present a list of candidate gravitationally lensed dusty star-forming galaxies (DSFGs) from the HerMES Large Mode Survey (HeLMS) and the Herschel Stripe 82 Survey (HerS). Together, these partially overlapping surveys cover 372 deg2 on the sky. After removing local spiral galaxies and known radio-loud blazars, our candidate list of lensed DSFGs is composed of 77 sources with 500 _m ux densities (S500) greater than 100 mJy. Such sources are dusty starburst galaxies similar to the _rst bright Sub Millimeter Galaxies (SMGs) discovered with SCUBA. We expect a large fraction of this list to be strongly lensed, with a small fraction made up of bright SMG-SMG mergers that appear as Hyper-Luminous Infrared Galaxies (HyLIRGs; LIR > 1013 L_). Thirteen of the 77 candidates have spectroscopic redshifts from CO spectroscopy with ground-based interferometers, putting them at z > 1 and well above the redshift of the foreground lensing galaxies. The surface density of our sample is 0.21 _ 0.03 deg2. We present follow-up imaging of a few of the candidates confirming their lensing nature. The sample presented here is an ideal tool for higher resolution imaging and spectroscopic observations to understand detailed properties of starburst phenomena in distant galaxies.
Funding
Astrophysics and Cosmology - Sussex Consolidated Grant; G1291; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/L000652/1
HELP - Herschel Extragalactic Legacy Project; G1265; EUROPEAN UNION; FP7-SPACE-2013-1-607254
History
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- Published
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- Published version
Journal
Astrophysical JournalISSN
0004-637XPublisher
American Astronomical SocietyExternal DOI
Issue
1Volume
823Department affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2016-05-20First Open Access (FOA) Date
2016-05-20First Compliant Deposit (FCD) Date
2016-05-19Usage metrics
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