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The DES bright arcs survey: hundreds of candidate strongly lensed galaxy systems from the Dark Energy Survey Science Verification and Year 1 observations

Diehl, H.T.; Buckley-Geer, E.J.; Lindgren, K.A.; Nord, B.; Gaitsch, H.; Gaitsch, S.; Lin, H.; Allam, S.; Collett, T.E.; Furlanetto, C.; Gill, M.S.S.; More, A.; Nightingale, J.; Odden, C.; Pellico, A.; Tucker, D.L.; Costa, L.N. da; Neto, A.Fausti; Kuropatkin, N.; Soares-Santos, M.; Welch, B.; Zhang, Y.; Frieman, J.A.; Abdalla, F.B.; Annis, J.; Benoit-Lévy, A.; Bertin, E.; Brooks, D.; Burke, D. L.; Rosell, A.Carnero; Kind, M.Carrasco; Carretero, J.; Cunha, C.E.; D’Andrea, C.B.; Desai, S.; Dietrich, J.P.; Drlica-Wagner, A.; Evrard, A.E.; Finley, D.A.; Flaugher, B.; García-Bellido, J.; Gerdes, D.W.; Goldstein, D.A.; Gruen, D.; Gruendl, R.A.; Gschwend, J.; Gutierrez, G.; James, D.J.; Kuehn, K.; Kuhlmann, S.; Lahav, O.; Li, T.S.; Lima, M.; Maia, M.A.G.; Marshall, J.L.; Menanteau, F.; Miquel, R.; Nichol, R.C.; Nugent, P.; Ogando, R.L.C.; Plazas, A.A.; Reil, K.; Romer, A.K.; Sako, M.; Sanchez, E.; Santiago, B.; Scarpine, V.; Schindler, R.; Schubnell, M.; Sevilla-Noarbe, I.; Sheldon, E.; Smith, M.; Sobreira, F.; Suchyta, E.; Swanson, M.E.C.; Tarle, G.; Thomas, D.; Walker, A.R.

Authors

H.T. Diehl

E.J. Buckley-Geer

K.A. Lindgren

B. Nord

H. Gaitsch

S. Gaitsch

H. Lin

S. Allam

T.E. Collett

C. Furlanetto

M.S.S. Gill

A. More

J. Nightingale

C. Odden

A. Pellico

D.L. Tucker

L.N. da Costa

A.Fausti Neto

N. Kuropatkin

M. Soares-Santos

B. Welch

Y. Zhang

J.A. Frieman

F.B. Abdalla

J. Annis

A. Benoit-Lévy

E. Bertin

D. Brooks

D. L. Burke

A.Carnero Rosell

M.Carrasco Kind

J. Carretero

C.E. Cunha

C.B. D’Andrea

S. Desai

J.P. Dietrich

A. Drlica-Wagner

A.E. Evrard

D.A. Finley

B. Flaugher

J. García-Bellido

D.W. Gerdes

D.A. Goldstein

D. Gruen

R.A. Gruendl

J. Gschwend

G. Gutierrez

D.J. James

K. Kuehn

S. Kuhlmann

O. Lahav

T.S. Li

M. Lima

M.A.G. Maia

J.L. Marshall

F. Menanteau

R. Miquel

R.C. Nichol

P. Nugent

R.L.C. Ogando

A.A. Plazas

K. Reil

A.K. Romer

M. Sako

E. Sanchez

B. Santiago

V. Scarpine

R. Schindler

M. Schubnell

I. Sevilla-Noarbe

E. Sheldon

M. Smith

F. Sobreira

E. Suchyta

M.E.C. Swanson

G. Tarle

D. Thomas

A.R. Walker



Abstract

We report the results of searches for strong gravitational lens systems in the Dark Energy Survey (DES) Science Verification and Year 1 observations. The Science Verification data span approximately 250 sq. deg. with a median i-band limiting magnitude for extended objects (10σ) of 23.0. The Year 1 data span approximately 2000 sq. deg. and have anti-band limiting magnitude for extended objects (10σ) of 22.9. As these data sets are both wide and deep, they are particularly useful for identifying strong gravitational lens candidates. Potential strong gravitational lens candidate systems were initially identified based on a color and magnitude selection in the DES object catalogs or because the system is at the location of a previously identified galaxy cluster. Cutout images of potential candidates were then visually scanned using an object viewer and numerically ranked according to whether or not we judged them to be likely strong gravitational lens systems. Having scanned nearly 400,000 cutouts, we present 374 candidate strong lens systems, of which 348 are identified for the first time. We provide the R.A. and decl., the magnitudes and photometric properties of the lens and source objects, and the distance (radius) of the source(s) from the lens center for each system.

Citation

Diehl, H., Buckley-Geer, E., Lindgren, K., Nord, B., Gaitsch, H., Gaitsch, S., …Walker, A. (2017). The DES bright arcs survey: hundreds of candidate strongly lensed galaxy systems from the Dark Energy Survey Science Verification and Year 1 observations. Astrophysical Journal Supplement, 232(1), https://doi.org/10.3847/1538-4365/aa8667

Journal Article Type Article
Acceptance Date Aug 7, 2017
Publication Date Sep 22, 2017
Deposit Date Oct 20, 2017
Publicly Available Date Oct 20, 2017
Journal Astrophysical Journal Supplement Series
Print ISSN 0067-0049
Electronic ISSN 1538-4365
Publisher American Astronomical Society
Peer Reviewed Peer Reviewed
Volume 232
Issue 1
DOI https://doi.org/10.3847/1538-4365/aa8667
Keywords galaxies: high-redshift – gravitational lensing: strong
Public URL http://eprints.nottingham.ac.uk/id/eprint/47410
Publisher URL https://doi.org/10.3847/1538-4365/aa8667
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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