The STRong lensing Insights into the Dark Energy Survey (STRIDES) 2016 follow-up campaign - II. New quasar lenses from double component fitting

T. Anguita; P. L. Schechter; N. Kuropatkin; N. D. Morgan; F. Ostrovski; L. E. Abramson; A. Agnello; Y. Apostolovski; C. D. Fassnacht; J. W. Hsueh; V. Motta; K. Rojas; C. E. Rusu; T. Treu; P. Williams; M. Auger; E. Buckley-Geer; H. Lin; R. McMahon; T. M.C. Abbott; S. Allam; J. Annis; R. A. Bernstein; E. Bertin; D. Brooks; D. L. Burke; A. Carnero Rosell; M. Carrasco-Kind; J. Carretero; C. E. Cunha; C. B. D'Andrea; J. De Vicente; D. L. Depoy; S. Desai; H. T. DIehl; P. Doel; B. Flaugher; J. García-Bellido; D. W. Gerdes; D. Gruen; R. A. Gruendl; J. Gschwend; W. G. Hartley; D. L. Hollowood; K. Honscheid; D. J. James; K. Kuehn; M. Lima; M. A.G. Maia; R. Miquel; A. A. Plazas; E. Sanchez; V. Scarpine; M. Smith; M. Soares-Santos; F. Sobreira; E. Suchyta; G. Tarle; A. R. Walker

doi:10.1093/mnras/sty2172

The STRong lensing Insights into the Dark Energy Survey (STRIDES) 2016 follow-up campaign - II. New quasar lenses from double component fitting

T. Anguita, P. L. Schechter, N. Kuropatkin, N. D. Morgan, F. Ostrovski, L. E. Abramson, A. Agnello, Y. Apostolovski, C. D. Fassnacht, J. W. Hsueh, V. Motta, K. Rojas, C. E. Rusu, T. Treu, P. Williams, M. Auger, E. Buckley-Geer, H. Lin, R. McMahon, T. M.C. AbbottS. Allam, J. Annis, R. A. Bernstein, E. Bertin, D. Brooks, D. L. Burke, A. Carnero Rosell, M. Carrasco-Kind, J. Carretero, C. E. Cunha, C. B. D'Andrea, J. De Vicente, D. L. Depoy, S. Desai, H. T. DIehl, P. Doel, B. Flaugher, J. García-Bellido, D. W. Gerdes, D. Gruen, R. A. Gruendl, J. Gschwend, W. G. Hartley, D. L. Hollowood, K. Honscheid, D. J. James, K. Kuehn, M. Lima, M. A.G. Maia, R. Miquel, A. A. Plazas, E. Sanchez, V. Scarpine, M. Smith, M. Soares-Santos, F. Sobreira, E. Suchyta, G. Tarle, A. R. Walker

Workflow Systems

Research output: Contribution to journal › Article › peer-review

35 Scopus citations

Abstract

We report upon the follow-up of 34 candidate lensed quasars found in the Dark Energy Survey using NTT EFOSC, Magellan-IMACS, KECK-ESI, and SOAR-SAMI. These candidates were selected by a combination of double component fitting, morphological assessment, and colour analysis. Most systems followed up are indeed composed of at least one quasar image and 13 with two or more quasar images: two lenses, four projected binaries, and seven nearly identical quasar pairs (NIQs). The two systems confirmed as genuine gravitationally lensed quasars are one quadruple at $z$s = 1.713 and one double at $z$s = 1.515. Lens modelling of these two systems reveals that both systems require very little contribution from the environment to reproduce the image configuration. Nevertheless, small flux anomalies can be observed in one of the images of the quad. Further observations of nine inconclusive systems (including seven NIQs) will allow to confirm (or not) their gravitational lens nature.

Original language	English
Pages (from-to)	5017-5028
Number of pages	12
Journal	Monthly Notices of the Royal Astronomical Society
Volume	480
Issue number	4
DOIs	https://doi.org/10.1093/mnras/sty2172
State	Published - Nov 1 2018

Funding

Funders	Funder number
Seventh Framework Programme	1138766, 240672, 306478, 1715611, 291329, 1450141
National Science Foundation	1138766, 1714953, 1715611

Keywords

gravitational lensing: strong
quasars: general
surveys
techniques: image processing

Access to Document

10.1093/mnras/sty2172

Cite this

Anguita, T., Schechter, P. L., Kuropatkin, N., Morgan, N. D., Ostrovski, F., Abramson, L. E., Agnello, A., Apostolovski, Y., Fassnacht, C. D., Hsueh, J. W., Motta, V., Rojas, K., Rusu, C. E., Treu, T., Williams, P., Auger, M., Buckley-Geer, E., Lin, H., McMahon, R., ... Walker, A. R. (2018). The STRong lensing Insights into the Dark Energy Survey (STRIDES) 2016 follow-up campaign - II. New quasar lenses from double component fitting. Monthly Notices of the Royal Astronomical Society, 480(4), 5017-5028. https://doi.org/10.1093/mnras/sty2172

@article{8d2509ee1cfe4c2488e309813504228f,

title = "The STRong lensing Insights into the Dark Energy Survey (STRIDES) 2016 follow-up campaign - II. New quasar lenses from double component fitting",

abstract = "We report upon the follow-up of 34 candidate lensed quasars found in the Dark Energy Survey using NTT EFOSC, Magellan-IMACS, KECK-ESI, and SOAR-SAMI. These candidates were selected by a combination of double component fitting, morphological assessment, and colour analysis. Most systems followed up are indeed composed of at least one quasar image and 13 with two or more quasar images: two lenses, four projected binaries, and seven nearly identical quasar pairs (NIQs). The two systems confirmed as genuine gravitationally lensed quasars are one quadruple at $z$s = 1.713 and one double at $z$s = 1.515. Lens modelling of these two systems reveals that both systems require very little contribution from the environment to reproduce the image configuration. Nevertheless, small flux anomalies can be observed in one of the images of the quad. Further observations of nine inconclusive systems (including seven NIQs) will allow to confirm (or not) their gravitational lens nature.",

keywords = "gravitational lensing: strong, quasars: general, surveys, techniques: image processing",

author = "T. Anguita and Schechter, {P. L.} and N. Kuropatkin and Morgan, {N. D.} and F. Ostrovski and Abramson, {L. E.} and A. Agnello and Y. Apostolovski and Fassnacht, {C. D.} and Hsueh, {J. W.} and V. Motta and K. Rojas and Rusu, {C. E.} and T. Treu and P. Williams and M. Auger and E. Buckley-Geer and H. Lin and R. McMahon and Abbott, {T. M.C.} and S. Allam and J. Annis and Bernstein, {R. A.} and E. Bertin and D. Brooks and Burke, {D. L.} and {Carnero Rosell}, A. and M. Carrasco-Kind and J. Carretero and Cunha, {C. E.} and D'Andrea, {C. B.} and {De Vicente}, J. and Depoy, {D. L.} and S. Desai and DIehl, {H. T.} and P. Doel and B. Flaugher and J. Garc{\'i}a-Bellido and Gerdes, {D. W.} and D. Gruen and Gruendl, {R. A.} and J. Gschwend and Hartley, {W. G.} and Hollowood, {D. L.} and K. Honscheid and James, {D. J.} and K. Kuehn and M. Lima and Maia, {M. A.G.} and R. Miquel and Plazas, {A. A.} and E. Sanchez and V. Scarpine and M. Smith and M. Soares-Santos and F. Sobreira and E. Suchyta and G. Tarle and Walker, {A. R.}",

note = "Publisher Copyright: {\textcopyright} 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society.",

year = "2018",

month = nov,

day = "1",

doi = "10.1093/mnras/sty2172",

language = "English",

volume = "480",

pages = "5017--5028",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "4",

}

Anguita, T, Schechter, PL, Kuropatkin, N, Morgan, ND, Ostrovski, F, Abramson, LE, Agnello, A, Apostolovski, Y, Fassnacht, CD, Hsueh, JW, Motta, V, Rojas, K, Rusu, CE, Treu, T, Williams, P, Auger, M, Buckley-Geer, E, Lin, H, McMahon, R, Abbott, TMC, Allam, S, Annis, J, Bernstein, RA, Bertin, E, Brooks, D, Burke, DL, Carnero Rosell, A, Carrasco-Kind, M, Carretero, J, Cunha, CE, D'Andrea, CB, De Vicente, J, Depoy, DL, Desai, S, DIehl, HT, Doel, P, Flaugher, B, García-Bellido, J, Gerdes, DW, Gruen, D, Gruendl, RA, Gschwend, J, Hartley, WG, Hollowood, DL, Honscheid, K, James, DJ, Kuehn, K, Lima, M, Maia, MAG, Miquel, R, Plazas, AA, Sanchez, E, Scarpine, V, Smith, M, Soares-Santos, M, Sobreira, F, Suchyta, E, Tarle, G & Walker, AR 2018, 'The STRong lensing Insights into the Dark Energy Survey (STRIDES) 2016 follow-up campaign - II. New quasar lenses from double component fitting', Monthly Notices of the Royal Astronomical Society, vol. 480, no. 4, pp. 5017-5028. https://doi.org/10.1093/mnras/sty2172

TY - JOUR

T1 - The STRong lensing Insights into the Dark Energy Survey (STRIDES) 2016 follow-up campaign - II. New quasar lenses from double component fitting

AU - Anguita, T.

AU - Schechter, P. L.

AU - Kuropatkin, N.

AU - Morgan, N. D.

AU - Ostrovski, F.

AU - Abramson, L. E.

AU - Agnello, A.

AU - Apostolovski, Y.

AU - Fassnacht, C. D.

AU - Hsueh, J. W.

AU - Motta, V.

AU - Rojas, K.

AU - Rusu, C. E.

AU - Treu, T.

AU - Williams, P.

AU - Auger, M.

AU - Buckley-Geer, E.

AU - Lin, H.

AU - McMahon, R.

AU - Abbott, T. M.C.

AU - Allam, S.

AU - Annis, J.

AU - Bernstein, R. A.

AU - Bertin, E.

AU - Brooks, D.

AU - Burke, D. L.

AU - Carnero Rosell, A.

AU - Carrasco-Kind, M.

AU - Carretero, J.

AU - Cunha, C. E.

AU - D'Andrea, C. B.

AU - De Vicente, J.

AU - Depoy, D. L.

AU - Desai, S.

AU - DIehl, H. T.

AU - Doel, P.

AU - Flaugher, B.

AU - García-Bellido, J.

AU - Gerdes, D. W.

AU - Gruen, D.

AU - Gruendl, R. A.

AU - Gschwend, J.

AU - Hartley, W. G.

AU - Hollowood, D. L.

AU - Honscheid, K.

AU - James, D. J.

AU - Kuehn, K.

AU - Lima, M.

AU - Maia, M. A.G.

AU - Miquel, R.

AU - Plazas, A. A.

AU - Sanchez, E.

AU - Scarpine, V.

AU - Smith, M.

AU - Soares-Santos, M.

AU - Sobreira, F.

AU - Suchyta, E.

AU - Tarle, G.

AU - Walker, A. R.

PY - 2018/11/1

Y1 - 2018/11/1

N2 - We report upon the follow-up of 34 candidate lensed quasars found in the Dark Energy Survey using NTT EFOSC, Magellan-IMACS, KECK-ESI, and SOAR-SAMI. These candidates were selected by a combination of double component fitting, morphological assessment, and colour analysis. Most systems followed up are indeed composed of at least one quasar image and 13 with two or more quasar images: two lenses, four projected binaries, and seven nearly identical quasar pairs (NIQs). The two systems confirmed as genuine gravitationally lensed quasars are one quadruple at $z$s = 1.713 and one double at $z$s = 1.515. Lens modelling of these two systems reveals that both systems require very little contribution from the environment to reproduce the image configuration. Nevertheless, small flux anomalies can be observed in one of the images of the quad. Further observations of nine inconclusive systems (including seven NIQs) will allow to confirm (or not) their gravitational lens nature.

AB - We report upon the follow-up of 34 candidate lensed quasars found in the Dark Energy Survey using NTT EFOSC, Magellan-IMACS, KECK-ESI, and SOAR-SAMI. These candidates were selected by a combination of double component fitting, morphological assessment, and colour analysis. Most systems followed up are indeed composed of at least one quasar image and 13 with two or more quasar images: two lenses, four projected binaries, and seven nearly identical quasar pairs (NIQs). The two systems confirmed as genuine gravitationally lensed quasars are one quadruple at $z$s = 1.713 and one double at $z$s = 1.515. Lens modelling of these two systems reveals that both systems require very little contribution from the environment to reproduce the image configuration. Nevertheless, small flux anomalies can be observed in one of the images of the quad. Further observations of nine inconclusive systems (including seven NIQs) will allow to confirm (or not) their gravitational lens nature.

KW - gravitational lensing: strong

KW - quasars: general

KW - surveys

KW - techniques: image processing

UR - http://www.scopus.com/inward/record.url?scp=85054806480&partnerID=8YFLogxK

U2 - 10.1093/mnras/sty2172

DO - 10.1093/mnras/sty2172

M3 - Article

AN - SCOPUS:85054806480

SN - 0035-8711

VL - 480

SP - 5017

EP - 5028

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 4

ER -

The STRong lensing Insights into the Dark Energy Survey (STRIDES) 2016 follow-up campaign - II. New quasar lenses from double component fitting

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this