The Herschel-ATLAS: a sample of 500 [mu]m-selected lensed galaxies over 600 deg2

M Negrello; S Amber; A Amvrosiadis; Z-Y Cai; A Lapi; J Gonzalez-Nuevo; G DeZotti; C Furlanetto; S Maddox; M Allen; T Bakx; R Bussmann; A Cooray; G Covone; L Danese; H Dannerbauer; H Fu; J Greenslade; M Gurwell; R Hopwood; L E Koopmans; N Napolitano; H Nayyeri; A Omont; C Petrillo; D Riechers; S Serjeant; C Tortora; E Valiante; G Kleijn; G Vernardos; J Wardlow; M Baes; A Baker; N Bourne; D Clements; S Crawford; S Dye; L Dunne; S Eales; R Ivison; L Marchetti; M Michalowski; M W L Smith; M Vaccari; P vanderWerf

doi:10.1093/mnras/stw2911

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The Herschel-ATLAS: a sample of 500 [mu]m-selected lensed galaxies over 600 deg2

Journal article

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The Herschel-ATLAS: a sample of 500 [mu]m-selected lensed galaxies over 600 deg2

M Negrello, S Amber, A Amvrosiadis, Z-Y Cai, A Lapi, J Gonzalez-Nuevo, G DeZotti, C Furlanetto, S Maddox, M Allen, …

Monthly notices of the Royal Astronomical Society, Vol.465(3), pp.3558-3580

03/01/2017

DOI: 10.1093/mnras/stw2911

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Abstract

We present a sample of 80 candidate strongly lensed galaxies with flux density above 100 mJy at 500 ...m extracted from the Herschel Astrophysical Terahertz Large Area Survey, over an area of 600 deg2. Available imaging and spectroscopic data allow us to confirm the strong lensing in 20 cases and to reject it in one case. For other eight objects, the lensing scenario is strongly supported by the presence of two sources along the same line of sight with distinct photometric redshifts. The remaining objects await more follow-up observations to confirm their nature. The lenses and the background sources have median redshifts zL = 0.6 and zS = 2.5, respectively, and are observed out to zL = 1.2 and zS = 4.2. We measure the number counts of candidate lensed galaxies at 500 ...m and compare them with theoretical predictions, finding a good agreement for a maximum magnification of the background sources in the range 10-20. These values are consistent with the magnification factors derived from the lens modelling of individual systems. The catalogue presented here provides sub-mm bright targets for follow-up observations aimed at exploiting gravitational lensing, to study with unprecedented details the morphological and dynamical properties of dusty star-forming regions in z ... 1.5 galaxies. (ProQuest: ... denotes formulae/symbols omitted.)

Astronomy

Gravity

Star & galaxy formation

Details

Title: Subtitle: The Herschel-ATLAS: a sample of 500 [mu]m-selected lensed galaxies over 600 deg2
Creators: M Negrello - Cardiff University
S Amber - The Open University
A Amvrosiadis - Cardiff University
Z-Y Cai
A Lapi - Scuola Internazionale Superiore di Studi Avanzati
J Gonzalez-Nuevo
G DeZotti
C Furlanetto
S Maddox - University of Canterbury
M Allen
T Bakx
R Bussmann - Cornell University
A Cooray - University of California, Irvine
G Covone
L Danese - Scuola Internazionale Superiore di Studi Avanzati
H Dannerbauer - Instituto de Astrofísica de Canarias
H Fu - University of Iowa, Physics and Astronomy
J Greenslade
M Gurwell - Harvard University
R Hopwood - Imperial College London
L E Koopmans
N Napolitano
H Nayyeri - University of California, Irvine
A Omont - Institut d'Astrophysique de Paris
C Petrillo
D Riechers - Cornell University
S Serjeant
C Tortora
E Valiante - Cardiff University
G Kleijn
G Vernardos
J Wardlow - University of Copenhagen
M Baes - Ghent University
A Baker
N Bourne - University of Nottingham
D Clements - Imperial College London
S Crawford
S Dye - University of Nottingham
L Dunne - University of Nottingham
S Eales - Cardiff University
R Ivison - University of Edinburgh
L Marchetti
M Michalowski - University of Edinburgh
M W L Smith
M Vaccari
P vanderWerf
Resource Type: Journal article
Publication Details: Monthly notices of the Royal Astronomical Society, Vol.465(3), pp.3558-3580
Publisher: Oxford University Press
DOI: 10.1093/mnras/stw2911
ISSN: 0035-8711
eISSN: 1365-2966
Grant note: name: MINECO, award: AYA2015-65887-P; DOI: 10.13039/501100000271, name: STFC, award: 267209, ST/L00075X/1, 639.043.308; DOI: 10.13039/501100000271, name: Science and Technology Facilities Council, award: ST/J001597/1
Language: English
Date published: 03/01/2017
Academic Unit: Physics and Astronomy
Record Identifier: 9984429053302771

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