The STRong lensing Insights into the Dark Energy Survey (STRIDES) 2016 follow-up campaign - I. Overview and classification of candidates selected by two techniques

T. Treu, A. Agnello, M. A. Baumer, S. Birrer, E. J. Buckley-Geer, F. Courbin, Y. J. Kim, H. Lin, P. J. Marshall, B. Nord, P. L. Schechter, P. R. Sivakumar, L. E. Abramson, T. Anguita, Y. Apostolovski, M. W. Auger, J. H.H. Chan, G. C.F. Chen, T. E. Collett, C. D. FassnachtJ. W. Hsueh, C. Lemon, R. G. McMahon, V. Motta, F. Ostrovski, K. Rojas, C. E. Rusu, P. Williams, J. Frieman, G. Meylan, S. H. Suyu, T. M.C. Abbott, F. B. Abdalla, S. Allam, J. Annis, S. Avila, M. Banerji, D. Brooks, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, F. J. Castander, C. B. D'Andrea, L. N. da Costa, J. De Vicente, P. Doel, T. F. Eifler, B. Flaugher, P. Fosalba, J. García-Bellido, D. A. Goldstein, D. Gruen, R. A. Gruendl, G. Gutierrez, W. G. Hartley, D. Hollowood, K. Honscheid, D. J. James, K. Kuehn, N. Kuropatkin, M. Lima, M. A.G. Maia, P. Martini, F. Menanteau, R. Miquel, A. A. Plazas, A. K. Romer, E. Sanchez, V. Scarpine, R. Schindler, M. Schubnell, I. Sevilla-Noarbe, M. Smith, R. C. Smith, M. Soares-Santos, F. Sobreira, E. Suchyta, M. E.C. Swanson, G. Tarle, D. Thomas, D. L. Tucker, A. R. Walker

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The primary goals of the STRong lensing Insights into the Dark Energy Survey (STRIDES) collaboration are to measure the dark energy equation of state parameter and the free streaming length of dark matter. To this aim, STRIDES is discovering strongly lensed quasars in the imaging data of the Dark Energy Survey and following them up to measure time delays, high resolution imaging, and spectroscopy sufficient to construct accurate lens models. In this paper, we first present forecasts for STRIDES. Then, we describe the STRIDES classification scheme, and give an overview of the Fall 2016 follow-up campaign. We continue by detailing the results of two selection methods, the outlier selection technique and a morphological algorithm, and presenting lens models of a system that could possibly be a lensed quasar in an unusual configuration. We conclude with the summary statistics of the Fall 2016 campaign. Including searches presented in companion papers (Anguita et al.; Ostrovski et al.), STRIDES followed up 117 targets identifying 7 new strongly lensed systems, and 7 nearly identical quasars, which could be confirmed as lenses by the detection of the lens galaxy. 76 candidates were rejected and 27 remain otherwise inconclusive, for a success rate in the range of 6-35 per cent. This rate is comparable to that of previous searches like SDSS Quasar Lens Search even though the parent data set of STRIDES is purely photometric and our selection of candidates cannot rely on spectroscopic information.

Original languageEnglish (US)
Pages (from-to)1041-1054
Number of pages14
JournalMonthly Notices of the Royal Astronomical Society
Volume481
Issue number1
DOIs
StatePublished - Nov 21 2018

Fingerprint

dark energy
quasars
lenses
energy
forecasting
outlier
equation of state
dark matter
equations of state
time lag
statistics
galaxies
spectroscopy
high resolution
configurations

Keywords

  • Catalogues
  • Gravitational lensing: strong
  • Methods: statistical

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

The STRong lensing Insights into the Dark Energy Survey (STRIDES) 2016 follow-up campaign - I. Overview and classification of candidates selected by two techniques. / Treu, T.; Agnello, A.; Baumer, M. A.; Birrer, S.; Buckley-Geer, E. J.; Courbin, F.; Kim, Y. J.; Lin, H.; Marshall, P. J.; Nord, B.; Schechter, P. L.; Sivakumar, P. R.; Abramson, L. E.; Anguita, T.; Apostolovski, Y.; Auger, M. W.; Chan, J. H.H.; Chen, G. C.F.; Collett, T. E.; Fassnacht, C. D.; Hsueh, J. W.; Lemon, C.; McMahon, R. G.; Motta, V.; Ostrovski, F.; Rojas, K.; Rusu, C. E.; Williams, P.; Frieman, J.; Meylan, G.; Suyu, S. H.; Abbott, T. M.C.; Abdalla, F. B.; Allam, S.; Annis, J.; Avila, S.; Banerji, M.; Brooks, D.; Rosell, A. Carnero; Carrasco Kind, M.; Carretero, J.; Castander, F. J.; D'Andrea, C. B.; da Costa, L. N.; De Vicente, J.; Doel, P.; Eifler, T. F.; Flaugher, B.; Fosalba, P.; García-Bellido, J.; Goldstein, D. A.; Gruen, D.; Gruendl, R. A.; Gutierrez, G.; Hartley, W. G.; Hollowood, D.; Honscheid, K.; James, D. J.; Kuehn, K.; Kuropatkin, N.; Lima, M.; Maia, M. A.G.; Martini, P.; Menanteau, F.; Miquel, R.; Plazas, A. A.; Romer, A. K.; Sanchez, E.; Scarpine, V.; Schindler, R.; Schubnell, M.; Sevilla-Noarbe, I.; Smith, M.; Smith, R. C.; Soares-Santos, M.; Sobreira, F.; Suchyta, E.; Swanson, M. E.C.; Tarle, G.; Thomas, D.; Tucker, D. L.; Walker, A. R.

In: Monthly Notices of the Royal Astronomical Society, Vol. 481, No. 1, 21.11.2018, p. 1041-1054.

Research output: Contribution to journalArticle

Treu, T, Agnello, A, Baumer, MA, Birrer, S, Buckley-Geer, EJ, Courbin, F, Kim, YJ, Lin, H, Marshall, PJ, Nord, B, Schechter, PL, Sivakumar, PR, Abramson, LE, Anguita, T, Apostolovski, Y, Auger, MW, Chan, JHH, Chen, GCF, Collett, TE, Fassnacht, CD, Hsueh, JW, Lemon, C, McMahon, RG, Motta, V, Ostrovski, F, Rojas, K, Rusu, CE, Williams, P, Frieman, J, Meylan, G, Suyu, SH, Abbott, TMC, Abdalla, FB, Allam, S, Annis, J, Avila, S, Banerji, M, Brooks, D, Rosell, AC, Carrasco Kind, M, Carretero, J, Castander, FJ, D'Andrea, CB, da Costa, LN, De Vicente, J, Doel, P, Eifler, TF, Flaugher, B, Fosalba, P, García-Bellido, J, Goldstein, DA, Gruen, D, Gruendl, RA, Gutierrez, G, Hartley, WG, Hollowood, D, Honscheid, K, James, DJ, Kuehn, K, Kuropatkin, N, Lima, M, Maia, MAG, Martini, P, Menanteau, F, Miquel, R, Plazas, AA, Romer, AK, Sanchez, E, Scarpine, V, Schindler, R, Schubnell, M, Sevilla-Noarbe, I, Smith, M, Smith, RC, Soares-Santos, M, Sobreira, F, Suchyta, E, Swanson, MEC, Tarle, G, Thomas, D, Tucker, DL & Walker, AR 2018, 'The STRong lensing Insights into the Dark Energy Survey (STRIDES) 2016 follow-up campaign - I. Overview and classification of candidates selected by two techniques', Monthly Notices of the Royal Astronomical Society, vol. 481, no. 1, pp. 1041-1054. https://doi.org/10.1093/MNRAS/STY2329
Treu, T. ; Agnello, A. ; Baumer, M. A. ; Birrer, S. ; Buckley-Geer, E. J. ; Courbin, F. ; Kim, Y. J. ; Lin, H. ; Marshall, P. J. ; Nord, B. ; Schechter, P. L. ; Sivakumar, P. R. ; Abramson, L. E. ; Anguita, T. ; Apostolovski, Y. ; Auger, M. W. ; Chan, J. H.H. ; Chen, G. C.F. ; Collett, T. E. ; Fassnacht, C. D. ; Hsueh, J. W. ; Lemon, C. ; McMahon, R. G. ; Motta, V. ; Ostrovski, F. ; Rojas, K. ; Rusu, C. E. ; Williams, P. ; Frieman, J. ; Meylan, G. ; Suyu, S. H. ; Abbott, T. M.C. ; Abdalla, F. B. ; Allam, S. ; Annis, J. ; Avila, S. ; Banerji, M. ; Brooks, D. ; Rosell, A. Carnero ; Carrasco Kind, M. ; Carretero, J. ; Castander, F. J. ; D'Andrea, C. B. ; da Costa, L. N. ; De Vicente, J. ; Doel, P. ; Eifler, T. F. ; Flaugher, B. ; Fosalba, P. ; García-Bellido, J. ; Goldstein, D. A. ; Gruen, D. ; Gruendl, R. A. ; Gutierrez, G. ; Hartley, W. G. ; Hollowood, D. ; Honscheid, K. ; James, D. J. ; Kuehn, K. ; Kuropatkin, N. ; Lima, M. ; Maia, M. A.G. ; Martini, P. ; Menanteau, F. ; Miquel, R. ; Plazas, A. A. ; Romer, A. K. ; Sanchez, E. ; Scarpine, V. ; Schindler, R. ; Schubnell, M. ; Sevilla-Noarbe, I. ; Smith, M. ; Smith, R. C. ; Soares-Santos, M. ; Sobreira, F. ; Suchyta, E. ; Swanson, M. E.C. ; Tarle, G. ; Thomas, D. ; Tucker, D. L. ; Walker, A. R. / The STRong lensing Insights into the Dark Energy Survey (STRIDES) 2016 follow-up campaign - I. Overview and classification of candidates selected by two techniques. In: Monthly Notices of the Royal Astronomical Society. 2018 ; Vol. 481, No. 1. pp. 1041-1054.
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title = "The STRong lensing Insights into the Dark Energy Survey (STRIDES) 2016 follow-up campaign - I. Overview and classification of candidates selected by two techniques",
abstract = "The primary goals of the STRong lensing Insights into the Dark Energy Survey (STRIDES) collaboration are to measure the dark energy equation of state parameter and the free streaming length of dark matter. To this aim, STRIDES is discovering strongly lensed quasars in the imaging data of the Dark Energy Survey and following them up to measure time delays, high resolution imaging, and spectroscopy sufficient to construct accurate lens models. In this paper, we first present forecasts for STRIDES. Then, we describe the STRIDES classification scheme, and give an overview of the Fall 2016 follow-up campaign. We continue by detailing the results of two selection methods, the outlier selection technique and a morphological algorithm, and presenting lens models of a system that could possibly be a lensed quasar in an unusual configuration. We conclude with the summary statistics of the Fall 2016 campaign. Including searches presented in companion papers (Anguita et al.; Ostrovski et al.), STRIDES followed up 117 targets identifying 7 new strongly lensed systems, and 7 nearly identical quasars, which could be confirmed as lenses by the detection of the lens galaxy. 76 candidates were rejected and 27 remain otherwise inconclusive, for a success rate in the range of 6-35 per cent. This rate is comparable to that of previous searches like SDSS Quasar Lens Search even though the parent data set of STRIDES is purely photometric and our selection of candidates cannot rely on spectroscopic information.",
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journal = "Monthly Notices of the Royal Astronomical Society",
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TY - JOUR

T1 - The STRong lensing Insights into the Dark Energy Survey (STRIDES) 2016 follow-up campaign - I. Overview and classification of candidates selected by two techniques

AU - Treu, T.

AU - Agnello, A.

AU - Baumer, M. A.

AU - Birrer, S.

AU - Buckley-Geer, E. J.

AU - Courbin, F.

AU - Kim, Y. J.

AU - Lin, H.

AU - Marshall, P. J.

AU - Nord, B.

AU - Schechter, P. L.

AU - Sivakumar, P. R.

AU - Abramson, L. E.

AU - Anguita, T.

AU - Apostolovski, Y.

AU - Auger, M. W.

AU - Chan, J. H.H.

AU - Chen, G. C.F.

AU - Collett, T. E.

AU - Fassnacht, C. D.

AU - Hsueh, J. W.

AU - Lemon, C.

AU - McMahon, R. G.

AU - Motta, V.

AU - Ostrovski, F.

AU - Rojas, K.

AU - Rusu, C. E.

AU - Williams, P.

AU - Frieman, J.

AU - Meylan, G.

AU - Suyu, S. H.

AU - Abbott, T. M.C.

AU - Abdalla, F. B.

AU - Allam, S.

AU - Annis, J.

AU - Avila, S.

AU - Banerji, M.

AU - Brooks, D.

AU - Rosell, A. Carnero

AU - Carrasco Kind, M.

AU - Carretero, J.

AU - Castander, F. J.

AU - D'Andrea, C. B.

AU - da Costa, L. N.

AU - De Vicente, J.

AU - Doel, P.

AU - Eifler, T. F.

AU - Flaugher, B.

AU - Fosalba, P.

AU - García-Bellido, J.

AU - Goldstein, D. A.

AU - Gruen, D.

AU - Gruendl, R. A.

AU - Gutierrez, G.

AU - Hartley, W. G.

AU - Hollowood, D.

AU - Honscheid, K.

AU - James, D. J.

AU - Kuehn, K.

AU - Kuropatkin, N.

AU - Lima, M.

AU - Maia, M. A.G.

AU - Martini, P.

AU - Menanteau, F.

AU - Miquel, R.

AU - Plazas, A. A.

AU - Romer, A. K.

AU - Sanchez, E.

AU - Scarpine, V.

AU - Schindler, R.

AU - Schubnell, M.

AU - Sevilla-Noarbe, I.

AU - Smith, M.

AU - Smith, R. C.

AU - Soares-Santos, M.

AU - Sobreira, F.

AU - Suchyta, E.

AU - Swanson, M. E.C.

AU - Tarle, G.

AU - Thomas, D.

AU - Tucker, D. L.

AU - Walker, A. R.

PY - 2018/11/21

Y1 - 2018/11/21

N2 - The primary goals of the STRong lensing Insights into the Dark Energy Survey (STRIDES) collaboration are to measure the dark energy equation of state parameter and the free streaming length of dark matter. To this aim, STRIDES is discovering strongly lensed quasars in the imaging data of the Dark Energy Survey and following them up to measure time delays, high resolution imaging, and spectroscopy sufficient to construct accurate lens models. In this paper, we first present forecasts for STRIDES. Then, we describe the STRIDES classification scheme, and give an overview of the Fall 2016 follow-up campaign. We continue by detailing the results of two selection methods, the outlier selection technique and a morphological algorithm, and presenting lens models of a system that could possibly be a lensed quasar in an unusual configuration. We conclude with the summary statistics of the Fall 2016 campaign. Including searches presented in companion papers (Anguita et al.; Ostrovski et al.), STRIDES followed up 117 targets identifying 7 new strongly lensed systems, and 7 nearly identical quasars, which could be confirmed as lenses by the detection of the lens galaxy. 76 candidates were rejected and 27 remain otherwise inconclusive, for a success rate in the range of 6-35 per cent. This rate is comparable to that of previous searches like SDSS Quasar Lens Search even though the parent data set of STRIDES is purely photometric and our selection of candidates cannot rely on spectroscopic information.

AB - The primary goals of the STRong lensing Insights into the Dark Energy Survey (STRIDES) collaboration are to measure the dark energy equation of state parameter and the free streaming length of dark matter. To this aim, STRIDES is discovering strongly lensed quasars in the imaging data of the Dark Energy Survey and following them up to measure time delays, high resolution imaging, and spectroscopy sufficient to construct accurate lens models. In this paper, we first present forecasts for STRIDES. Then, we describe the STRIDES classification scheme, and give an overview of the Fall 2016 follow-up campaign. We continue by detailing the results of two selection methods, the outlier selection technique and a morphological algorithm, and presenting lens models of a system that could possibly be a lensed quasar in an unusual configuration. We conclude with the summary statistics of the Fall 2016 campaign. Including searches presented in companion papers (Anguita et al.; Ostrovski et al.), STRIDES followed up 117 targets identifying 7 new strongly lensed systems, and 7 nearly identical quasars, which could be confirmed as lenses by the detection of the lens galaxy. 76 candidates were rejected and 27 remain otherwise inconclusive, for a success rate in the range of 6-35 per cent. This rate is comparable to that of previous searches like SDSS Quasar Lens Search even though the parent data set of STRIDES is purely photometric and our selection of candidates cannot rely on spectroscopic information.

KW - Catalogues

KW - Gravitational lensing: strong

KW - Methods: statistical

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U2 - 10.1093/MNRAS/STY2329

DO - 10.1093/MNRAS/STY2329

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EP - 1054

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

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