The STRong lensing Insights into the Dark Energy Survey (STRIDES) 2016 follow-up campaign – II. New quasar lenses from double component fitting
International audience 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. Mos...
Published in: | Monthly Notices of the Royal Astronomical Society |
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ftunivnantes:oai:HAL:hal-01815181v1 2023-05-15T18:12:22+02:00 The STRong lensing Insights into the Dark Energy Survey (STRIDES) 2016 follow-up campaign – II. New quasar lenses from double component fitting 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. Abbott, T.M.C. Allam, S. Annis, J. Bernstein, R.A. Bertin, E. Brooks, D. Burke, D.L. Carnero Rosell, A. Carrasco Kind, M. Carretero, J. Cunha, C.E. d'Andrea, C.B. de Vicente, J. Depoy, D.L. Desai, S. Diehl, H.T. Doel, P. Flaugher, B. García-Bellido, J. Gerdes, D.W. Gruen, D. Gruendl, R.A. Gschwend, J. Hartley, W.G. Hollowood, D.L. Honscheid, K. James, D.J. Kuehn, K. Lima, M. Maia, M.A.G. Miquel, R. Institut d'Astrophysique de Paris (IAP) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) DES 2018 https://hal.science/hal-01815181 https://doi.org/10.1093/mnras/sty2172 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/arxiv/1805.12151 info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/sty2172 hal-01815181 https://hal.science/hal-01815181 ARXIV: 1805.12151 doi:10.1093/mnras/sty2172 INSPIRE: 1675832 Mon.Not.Roy.Astron.Soc. https://hal.science/hal-01815181 Mon.Not.Roy.Astron.Soc., 2018, 480 (4), pp.5017-5028. ⟨10.1093/mnras/sty2172⟩ quasars: general gravitational lensing: strong techniques: image processing surveys [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] info:eu-repo/semantics/article Journal articles 2018 ftunivnantes https://doi.org/10.1093/mnras/sty2172 2023-03-08T06:12:40Z International audience 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. Article in Journal/Newspaper sami Université de Nantes: HAL-UNIV-NANTES Monthly Notices of the Royal Astronomical Society |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
quasars: general gravitational lensing: strong techniques: image processing surveys [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] |
spellingShingle |
quasars: general gravitational lensing: strong techniques: image processing surveys [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] 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. Abbott, T.M.C. Allam, S. Annis, J. Bernstein, R.A. Bertin, E. Brooks, D. Burke, D.L. Carnero Rosell, A. Carrasco Kind, M. Carretero, J. Cunha, C.E. d'Andrea, C.B. de Vicente, J. Depoy, D.L. Desai, S. Diehl, H.T. Doel, P. Flaugher, B. García-Bellido, J. Gerdes, D.W. Gruen, D. Gruendl, R.A. Gschwend, J. Hartley, W.G. Hollowood, D.L. Honscheid, K. James, D.J. Kuehn, K. Lima, M. Maia, M.A.G. Miquel, R. The STRong lensing Insights into the Dark Energy Survey (STRIDES) 2016 follow-up campaign – II. New quasar lenses from double component fitting |
topic_facet |
quasars: general gravitational lensing: strong techniques: image processing surveys [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] |
description |
International audience 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. |
author2 |
Institut d'Astrophysique de Paris (IAP) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) DES |
format |
Article in Journal/Newspaper |
author |
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. Abbott, T.M.C. Allam, S. Annis, J. Bernstein, R.A. Bertin, E. Brooks, D. Burke, D.L. Carnero Rosell, A. Carrasco Kind, M. Carretero, J. Cunha, C.E. d'Andrea, C.B. de Vicente, J. Depoy, D.L. Desai, S. Diehl, H.T. Doel, P. Flaugher, B. García-Bellido, J. Gerdes, D.W. Gruen, D. Gruendl, R.A. Gschwend, J. Hartley, W.G. Hollowood, D.L. Honscheid, K. James, D.J. Kuehn, K. Lima, M. Maia, M.A.G. Miquel, R. |
author_facet |
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. Abbott, T.M.C. Allam, S. Annis, J. Bernstein, R.A. Bertin, E. Brooks, D. Burke, D.L. Carnero Rosell, A. Carrasco Kind, M. Carretero, J. Cunha, C.E. d'Andrea, C.B. de Vicente, J. Depoy, D.L. Desai, S. Diehl, H.T. Doel, P. Flaugher, B. García-Bellido, J. Gerdes, D.W. Gruen, D. Gruendl, R.A. Gschwend, J. Hartley, W.G. Hollowood, D.L. Honscheid, K. James, D.J. Kuehn, K. Lima, M. Maia, M.A.G. Miquel, R. |
author_sort |
Anguita, T. |
title |
The STRong lensing Insights into the Dark Energy Survey (STRIDES) 2016 follow-up campaign – II. New quasar lenses from double component fitting |
title_short |
The STRong lensing Insights into the Dark Energy Survey (STRIDES) 2016 follow-up campaign – II. New quasar lenses from double component fitting |
title_full |
The STRong lensing Insights into the Dark Energy Survey (STRIDES) 2016 follow-up campaign – II. New quasar lenses from double component fitting |
title_fullStr |
The STRong lensing Insights into the Dark Energy Survey (STRIDES) 2016 follow-up campaign – II. New quasar lenses from double component fitting |
title_full_unstemmed |
The STRong lensing Insights into the Dark Energy Survey (STRIDES) 2016 follow-up campaign – II. New quasar lenses from double component fitting |
title_sort |
strong lensing insights into the dark energy survey (strides) 2016 follow-up campaign – ii. new quasar lenses from double component fitting |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://hal.science/hal-01815181 https://doi.org/10.1093/mnras/sty2172 |
genre |
sami |
genre_facet |
sami |
op_source |
Mon.Not.Roy.Astron.Soc. https://hal.science/hal-01815181 Mon.Not.Roy.Astron.Soc., 2018, 480 (4), pp.5017-5028. ⟨10.1093/mnras/sty2172⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/arxiv/1805.12151 info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/sty2172 hal-01815181 https://hal.science/hal-01815181 ARXIV: 1805.12151 doi:10.1093/mnras/sty2172 INSPIRE: 1675832 |
op_doi |
https://doi.org/10.1093/mnras/sty2172 |
container_title |
Monthly Notices of the Royal Astronomical Society |
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1766184906321297408 |