Gravitational lens models based on Submillimeter Array Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.-selected strongly lensed sub-millimeter galaxies at z > 1.5

R. S Bussmann; I Pérez-Fournon; S Amber; J Calanog; M. A Gurwell; H Dannerbauer; F Bernardis; Hai Fu; A. I Harris; M Krips; A Lapi; R Maiolino; A Omont; D Riechers; J Wardlow; A. J Baker; M Birkinshaw; J Bock; N Bourne; D. L Clements; A Cooray; G Zotti; L Dunne; S Dye; S Eales; D Farrah; R Gavazzi; J González Nuevo; R Hopwood; E Ibar; R. J Ivison; N La Porte; S Maddox; P Martínez-Navajas; M Michalowski; M Negrello; S. J Oliver; I. G Roseboom; Douglas Scott; S Serjeant; A. J Smith; Matthew Smith; A Streblyanska; E Valiante; P Werf; A Verma; J. D Vieira; L Wang; D Wilner

doi:10.1088/0004-637X/779/1/25

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Gravitational lens models based on Submillimeter Array Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.-selected strongly lensed sub-millimeter galaxies at z > 1.5

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Gravitational lens models based on Submillimeter Array Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.-selected strongly lensed sub-millimeter galaxies at z > 1.5

R. S Bussmann, I Pérez-Fournon, S Amber, J Calanog, M. A Gurwell, H Dannerbauer, F Bernardis, Hai Fu, A. I Harris, M Krips, …

The Astrophysical journal, Vol.779(1), 25

12/10/2013

DOI: 10.1088/0004-637X/779/1/25

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Abstract

Strong gravitational lenses are now being routinely discovered in wide-field surveys at (sub)millimeter wavelengths. We present Submillimeter Array (SMA) high-spatial resolution imaging and Gemini-South and Multiple Mirror Telescope optical spectroscopy of strong lens candidates discovered in the two widest extragalactic surveys conducted by the Herschel Space Observatory: the Herschel-Astrophysical Terahertz Large Area Survey (H-ATLAS) and the Herschel Multi-tiered Extragalactic Survey (HerMES). From a sample of 30 Herschel sources with S500>100 mJy, 21 are strongly lensed (multiply imaged), 4 are moderately lensed (singly imaged), and the remainder require additional data to determine their lensing status. We apply a visibility-plane lens modeling technique to the SMA data to recover information about the masses of the lenses as well as the intrinsic (i.e., unlensed) sizes (rhalf) and far-infrared luminosities (LFIR) of the lensed submillimeter galaxies (SMGs). The sample of lenses comprises primarily isolated massive galaxies, but includes some groups and clusters as well. Several of the lenses are located at zlens>0.7, a redshift regime that is inaccessible to lens searches based on Sloan Digital Sky Survey spectroscopy. The lensed SMGs are amplified by factors that are significantly below statistical model predictions given the 500μm flux densities of our sample. We speculate that this may reflect a deficiency in our understanding of the intrinsic sizes and luminosities of the brightest SMGs. The lensed SMGs span nearly one decade in LFIR (median LFIR=7.9x1012 L ☉) and two decades in FIR luminosity surface density (median ΣFIR=6.0x1011 L☉ kpc-2). The strong lenses in this sample and others identified via (sub-)mm surveys will provide a wealth of information regarding the astrophysics of galaxy formation and evolution over a wide range in redshift.

Astrophysics

Cosmology

Evolution

astro

Astronomia e Astrofisica

Astrophysics of Galaxies

Extragalactic Astrophysics

fundamental parameters

galaxies

Galaxy Astrophysics

halos

high

Nongalactic Astrophysics

redshift

Settore FIS

strong

Details

Title: Subtitle: Gravitational lens models based on Submillimeter Array Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.-selected strongly lensed sub-millimeter galaxies at z > 1.5
Creators: R. S Bussmann - Harvard University
I Pérez-Fournon - Instituto de Astrofísica de Canarias
S Amber - The Open University
J Calanog - University of California, Berkeley
M. A Gurwell - Harvard University
H Dannerbauer - Université Paris Diderot
F Bernardis
Hai Fu - University of Iowa
A. I Harris - University of Maryland, College Park
M Krips - Institut de RadioAstronomie Millimétrique
A Lapi - Department Fisica, Univ. Tor Vergata
R Maiolino - University of Cambridge
A Omont - Institut d'Astrophysique de Paris
D Riechers - Cornell University
J Wardlow - University of California, Berkeley
A. J Baker - Rutgers, The State University of New Jersey
M Birkinshaw - University of Bristol
J Bock - California Institute of Technology
N Bourne - University of Nottingham
D. L Clements - Imperial College London
A Cooray - University of California, Berkeley
G Zotti
L Dunne - University of Canterbury
S Dye - University of Nottingham
S Eales - Cardiff University
D Farrah - Virginia Tech
R Gavazzi - Institut d'Astrophysique de Paris
J González Nuevo
R Hopwood - Imperial College London
E Ibar - Pontificia Universidad Católica de Chile
R. J Ivison - University of Edinburgh
N La Porte - Instituto de Astrofísica de Canarias
S Maddox - University of Canterbury
P Martínez-Navajas
M Michalowski - University of Edinburgh
M Negrello - INAF
S. J Oliver - University of Sussex
I. G Roseboom - University of Edinburgh
Douglas Scott - University of British Columbia
S Serjeant - Open University
A. J Smith - University of Sussex
Matthew Smith - Cardiff University
A Streblyanska - Consejo Superior de Investigaciones Científicas
E Valiante - University of British Columbia
P Werf
A Verma - University of Oxford
J. D Vieira - California Institute of Technology
L Wang - University of Sussex
D Wilner - Harvard University
Resource Type: Journal article
Publication Details: The Astrophysical journal, Vol.779(1), 25
DOI: 10.1088/0004-637X/779/1/25
ISSN: 0004-637X
eISSN: 1538-4357
Publisher: Institute of Physics (IOP)
Grant note: 1066293 / National Science Foundation (nsf_________::NSF) 0645427 / National Science Foundation (nsf_________::NSF)
Language: English
Date published: 12/10/2013
Academic Unit: Physics and Astronomy
Record Identifier: 9984200023802771

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