Discovery of two gravitationally lensed quasars in the Dark Energy Survey
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/140371 |
Resumo: | We present spectroscopic confirmation of two new gravitationally lensed quasars, discovered in the Dark Energy Survey (DES) and Wide-field Infrared Survey Explorer (WISE) based on their multiband photometry and extended morphology in DES images. Images of DES J0115−5244 show a red galaxy with two blue point sources at either side, which are images of the same quasar at zs = 1.64 as obtained by our long-slit spectroscopic data. The Einstein radius estimated from the DES images is 0.51 arcsec. DES J2146−0047 is in the area of overlap between DES and the Sloan Digital Sky Survey (SDSS). Two blue components are visible in the DES and SDSS images. The SDSS fibre spectrum shows a quasar component at zs = 2.38 and absorption by Mg II and Fe II at zl = 0.799, which we tentatively associate with the foreground lens galaxy. Our long-slit spectra show that the blue components are resolved images of the same quasar. The Einstein radius is 0.68 arcsec, corresponding to an enclosed mass of 1.6 × 1011M . Three other candidates were observed and rejected, two being low-redshift pairs of starburst galaxies, and one being a quasar behind a blue star. These first confirmation results provide an important empirical validation of the data mining and model-based selection that is being applied to the entire DES data set. |
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Agnello, AdrianoTreu, TommasoOstrovski, F.Schechter, Paul L.Buckley-Geer, ElizabethLin, H.Auger, Matthew W.Courbin, Frederic Y. M.Fassnacht, Christopher D.Frieman, Joshua A.Kuropatkin, Nikolay P.Marshall, Phillip J.McMahon, Richard G.Meylan, GeorgesMore, Andrew MillsSuyu, SherryRusu, Cristian EduardFinley, David A.Abbott, Timothy M. C.Abdalla, Filipe B.Allam, Sahar S.Annis, James T.Banerji, M.Benoit-Lévy, AurélienBertin, EmmanuelBrooks, D.Burke, David LyleCarnero Rosell, AurelioCarrasco Kind, MatíasCarretero Palacios, JorgeCunha, Carlos EduardoD'Andrea, Christopher B.Costa, Luiz N. daDesai, S.Diehl, H. ThomasDietrich, Jörg P.Doel, PeterEifler, TimEstrada, JuanFausti Neto, AngeloFlaugher, BrennaFosalba Vela, PabloGerdes, David W.Gruen, DanielGutierrez, Gaston R.Honscheid, K.James, David J.Kent, Stephen M.Kuehn, KylerKuropatkin, Nikolay P.Lahav, OferLima, Marcos Vinicius Borges TeixeiraMaia, Marcio Antonio GeimbaMarch, Marisa CristinaMarshall, Jennifer L.Martini, PaulMelchior, Peter M.Miller, Christopher J.Miquel, RamonNichol, Robert C.Ogando, Ricardo L.C.Plazas Malagón, Andrés AlejandroReil, KevinRomer, Anita K.Roodman, AaronSako, MasaoSanchez-Alvaro, EusebioSantiago, Basilio XavierScarpine, Victor EmanuelSchubnell, MichaelSevilla Noarbe, IgnacioSmith, Robert ChristopherSoares-Santos, MarcelleSobreira, FláviaSuchyta, EricSwanson, Molly E. C.Tarle, GregoryThaler, Jon J.Tucker, Douglas L.Walker, AlistairWechsler, Risa H.Zhang, Yuanyuan2016-05-06T02:21:59Z20150035-8711http://hdl.handle.net/10183/140371000985619We present spectroscopic confirmation of two new gravitationally lensed quasars, discovered in the Dark Energy Survey (DES) and Wide-field Infrared Survey Explorer (WISE) based on their multiband photometry and extended morphology in DES images. Images of DES J0115−5244 show a red galaxy with two blue point sources at either side, which are images of the same quasar at zs = 1.64 as obtained by our long-slit spectroscopic data. The Einstein radius estimated from the DES images is 0.51 arcsec. DES J2146−0047 is in the area of overlap between DES and the Sloan Digital Sky Survey (SDSS). Two blue components are visible in the DES and SDSS images. The SDSS fibre spectrum shows a quasar component at zs = 2.38 and absorption by Mg II and Fe II at zl = 0.799, which we tentatively associate with the foreground lens galaxy. Our long-slit spectra show that the blue components are resolved images of the same quasar. The Einstein radius is 0.68 arcsec, corresponding to an enclosed mass of 1.6 × 1011M . Three other candidates were observed and rejected, two being low-redshift pairs of starburst galaxies, and one being a quasar behind a blue star. These first confirmation results provide an important empirical validation of the data mining and model-based selection that is being applied to the entire DES data set.application/pdfengMonthly notices of the Royal Astronomical Society. Oxford. Vol. 454, no. 2 (Dec. 2015), p. 1260-1265GaláxiasQuasarsGravitational lensing: strongMethods: observationalMethods: statisticalQuasars: emission linesDiscovery of two gravitationally lensed quasars in the Dark Energy SurveyEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000985619.pdf000985619.pdfTexto completo (inglês)application/pdf633819http://www.lume.ufrgs.br/bitstream/10183/140371/1/000985619.pdfff2e2fb011baf488f189d9e304e368b9MD51TEXT000985619.pdf.txt000985619.pdf.txtExtracted Texttext/plain32358http://www.lume.ufrgs.br/bitstream/10183/140371/2/000985619.pdf.txt72eb64d98c9538f34b23d87cf733b5abMD52THUMBNAIL000985619.pdf.jpg000985619.pdf.jpgGenerated Thumbnailimage/jpeg2203http://www.lume.ufrgs.br/bitstream/10183/140371/3/000985619.pdf.jpg60a80853475641aa12aca8bc2d476ebbMD5310183/1403712023-07-02 03:42:42.124924oai:www.lume.ufrgs.br:10183/140371Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-07-02T06:42:42Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Discovery of two gravitationally lensed quasars in the Dark Energy Survey |
title |
Discovery of two gravitationally lensed quasars in the Dark Energy Survey |
spellingShingle |
Discovery of two gravitationally lensed quasars in the Dark Energy Survey Agnello, Adriano Galáxias Quasars Gravitational lensing: strong Methods: observational Methods: statistical Quasars: emission lines |
title_short |
Discovery of two gravitationally lensed quasars in the Dark Energy Survey |
title_full |
Discovery of two gravitationally lensed quasars in the Dark Energy Survey |
title_fullStr |
Discovery of two gravitationally lensed quasars in the Dark Energy Survey |
title_full_unstemmed |
Discovery of two gravitationally lensed quasars in the Dark Energy Survey |
title_sort |
Discovery of two gravitationally lensed quasars in the Dark Energy Survey |
author |
Agnello, Adriano |
author_facet |
Agnello, Adriano Treu, Tommaso Ostrovski, F. Schechter, Paul L. Buckley-Geer, Elizabeth Lin, H. Auger, Matthew W. Courbin, Frederic Y. M. Fassnacht, Christopher D. Frieman, Joshua A. Kuropatkin, Nikolay P. Marshall, Phillip J. McMahon, Richard G. Meylan, Georges More, Andrew Mills Suyu, Sherry Rusu, Cristian Eduard Finley, David A. Abbott, Timothy M. C. Abdalla, Filipe B. Allam, Sahar S. Annis, James T. Banerji, M. Benoit-Lévy, Aurélien Bertin, Emmanuel Brooks, D. Burke, David Lyle Carnero Rosell, Aurelio Carrasco Kind, Matías Carretero Palacios, Jorge Cunha, Carlos Eduardo D'Andrea, Christopher B. Costa, Luiz N. da Desai, S. Diehl, H. Thomas Dietrich, Jörg P. Doel, Peter Eifler, Tim Estrada, Juan Fausti Neto, Angelo Flaugher, Brenna Fosalba Vela, Pablo Gerdes, David W. Gruen, Daniel Gutierrez, Gaston R. Honscheid, K. James, David J. Kent, Stephen M. Kuehn, Kyler Lahav, Ofer Lima, Marcos Vinicius Borges Teixeira Maia, Marcio Antonio Geimba March, Marisa Cristina Marshall, Jennifer L. Martini, Paul Melchior, Peter M. Miller, Christopher J. Miquel, Ramon Nichol, Robert C. Ogando, Ricardo L.C. Plazas Malagón, Andrés Alejandro Reil, Kevin Romer, Anita K. Roodman, Aaron Sako, Masao Sanchez-Alvaro, Eusebio Santiago, Basilio Xavier Scarpine, Victor Emanuel Schubnell, Michael Sevilla Noarbe, Ignacio Smith, Robert Christopher Soares-Santos, Marcelle Sobreira, Flávia Suchyta, Eric Swanson, Molly E. C. Tarle, Gregory Thaler, Jon J. Tucker, Douglas L. Walker, Alistair Wechsler, Risa H. Zhang, Yuanyuan |
author_role |
author |
author2 |
Treu, Tommaso Ostrovski, F. Schechter, Paul L. Buckley-Geer, Elizabeth Lin, H. Auger, Matthew W. Courbin, Frederic Y. M. Fassnacht, Christopher D. Frieman, Joshua A. Kuropatkin, Nikolay P. Marshall, Phillip J. McMahon, Richard G. Meylan, Georges More, Andrew Mills Suyu, Sherry Rusu, Cristian Eduard Finley, David A. Abbott, Timothy M. C. Abdalla, Filipe B. Allam, Sahar S. Annis, James T. Banerji, M. Benoit-Lévy, Aurélien Bertin, Emmanuel Brooks, D. Burke, David Lyle Carnero Rosell, Aurelio Carrasco Kind, Matías Carretero Palacios, Jorge Cunha, Carlos Eduardo D'Andrea, Christopher B. Costa, Luiz N. da Desai, S. Diehl, H. Thomas Dietrich, Jörg P. Doel, Peter Eifler, Tim Estrada, Juan Fausti Neto, Angelo Flaugher, Brenna Fosalba Vela, Pablo Gerdes, David W. Gruen, Daniel Gutierrez, Gaston R. Honscheid, K. James, David J. Kent, Stephen M. Kuehn, Kyler Lahav, Ofer Lima, Marcos Vinicius Borges Teixeira Maia, Marcio Antonio Geimba March, Marisa Cristina Marshall, Jennifer L. Martini, Paul Melchior, Peter M. Miller, Christopher J. Miquel, Ramon Nichol, Robert C. Ogando, Ricardo L.C. Plazas Malagón, Andrés Alejandro Reil, Kevin Romer, Anita K. Roodman, Aaron Sako, Masao Sanchez-Alvaro, Eusebio Santiago, Basilio Xavier Scarpine, Victor Emanuel Schubnell, Michael Sevilla Noarbe, Ignacio Smith, Robert Christopher Soares-Santos, Marcelle Sobreira, Flávia Suchyta, Eric Swanson, Molly E. C. Tarle, Gregory Thaler, Jon J. Tucker, Douglas L. Walker, Alistair Wechsler, Risa H. Zhang, Yuanyuan |
author2_role |
author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Agnello, Adriano Treu, Tommaso Ostrovski, F. Schechter, Paul L. Buckley-Geer, Elizabeth Lin, H. Auger, Matthew W. Courbin, Frederic Y. M. Fassnacht, Christopher D. Frieman, Joshua A. Kuropatkin, Nikolay P. Marshall, Phillip J. McMahon, Richard G. Meylan, Georges More, Andrew Mills Suyu, Sherry Rusu, Cristian Eduard Finley, David A. Abbott, Timothy M. C. Abdalla, Filipe B. Allam, Sahar S. Annis, James T. Banerji, M. Benoit-Lévy, Aurélien Bertin, Emmanuel Brooks, D. Burke, David Lyle Carnero Rosell, Aurelio Carrasco Kind, Matías Carretero Palacios, Jorge Cunha, Carlos Eduardo D'Andrea, Christopher B. Costa, Luiz N. da Desai, S. Diehl, H. Thomas Dietrich, Jörg P. Doel, Peter Eifler, Tim Estrada, Juan Fausti Neto, Angelo Flaugher, Brenna Fosalba Vela, Pablo Gerdes, David W. Gruen, Daniel Gutierrez, Gaston R. Honscheid, K. James, David J. Kent, Stephen M. Kuehn, Kyler Kuropatkin, Nikolay P. Lahav, Ofer Lima, Marcos Vinicius Borges Teixeira Maia, Marcio Antonio Geimba March, Marisa Cristina Marshall, Jennifer L. Martini, Paul Melchior, Peter M. Miller, Christopher J. Miquel, Ramon Nichol, Robert C. Ogando, Ricardo L.C. Plazas Malagón, Andrés Alejandro Reil, Kevin Romer, Anita K. Roodman, Aaron Sako, Masao Sanchez-Alvaro, Eusebio Santiago, Basilio Xavier Scarpine, Victor Emanuel Schubnell, Michael Sevilla Noarbe, Ignacio Smith, Robert Christopher Soares-Santos, Marcelle Sobreira, Flávia Suchyta, Eric Swanson, Molly E. C. Tarle, Gregory Thaler, Jon J. Tucker, Douglas L. Walker, Alistair Wechsler, Risa H. Zhang, Yuanyuan |
dc.subject.por.fl_str_mv |
Galáxias Quasars |
topic |
Galáxias Quasars Gravitational lensing: strong Methods: observational Methods: statistical Quasars: emission lines |
dc.subject.eng.fl_str_mv |
Gravitational lensing: strong Methods: observational Methods: statistical Quasars: emission lines |
description |
We present spectroscopic confirmation of two new gravitationally lensed quasars, discovered in the Dark Energy Survey (DES) and Wide-field Infrared Survey Explorer (WISE) based on their multiband photometry and extended morphology in DES images. Images of DES J0115−5244 show a red galaxy with two blue point sources at either side, which are images of the same quasar at zs = 1.64 as obtained by our long-slit spectroscopic data. The Einstein radius estimated from the DES images is 0.51 arcsec. DES J2146−0047 is in the area of overlap between DES and the Sloan Digital Sky Survey (SDSS). Two blue components are visible in the DES and SDSS images. The SDSS fibre spectrum shows a quasar component at zs = 2.38 and absorption by Mg II and Fe II at zl = 0.799, which we tentatively associate with the foreground lens galaxy. Our long-slit spectra show that the blue components are resolved images of the same quasar. The Einstein radius is 0.68 arcsec, corresponding to an enclosed mass of 1.6 × 1011M . Three other candidates were observed and rejected, two being low-redshift pairs of starburst galaxies, and one being a quasar behind a blue star. These first confirmation results provide an important empirical validation of the data mining and model-based selection that is being applied to the entire DES data set. |
publishDate |
2015 |
dc.date.issued.fl_str_mv |
2015 |
dc.date.accessioned.fl_str_mv |
2016-05-06T02:21:59Z |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
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publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/140371 |
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0035-8711 |
dc.identifier.nrb.pt_BR.fl_str_mv |
000985619 |
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http://hdl.handle.net/10183/140371 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Monthly notices of the Royal Astronomical Society. Oxford. Vol. 454, no. 2 (Dec. 2015), p. 1260-1265 |
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info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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