publication . Other literature type . Preprint . Article . 2017

Discovery of three strongly lensed quasars in the Sloan Digital Sky Survey

Tommaso Treu; Xin Wang; Peter Williams; Lindsay Oldham; Brian C. Lemaux; Y. Apostolovski; Cristian E. Rusu; J. W. Hsueh; K. Rojas; Timo Anguita; ...
Open Access
  • Published: 05 Jun 2017
  • Publisher: Oxford University Press (OUP)
Abstract
We present the discovery of 3 quasar lenses in the Sloan Digital Sky Survey (SDSS), selected using two novel photometry-based selection techniques. The J0941+0518 system, with two point sources separated by 5.46" on either side of a galaxy, has source and lens redshifts $z_s = 1.54$ and $z_l = 0.343$. The AO-assisted images of J2211+1929 show two point sources separated by 1.04", corresponding to the same quasar at $z_s = 1.07,$ besides the lens galaxy and Einstein ring. Images of J2257+2349 show two point sources separated by 1.67" on either side of an E/S0 galaxy. The extracted spectra show two images of the same quasar at redshift $z_s = 2.10$. In total, the ...
Persistent Identifiers
Subjects
free text keywords: Astrophysics - Astrophysics of Galaxies, Space and Planetary Science, Astronomy and Astrophysics, Photometry (optics), Einstein ring, symbols.namesake, symbols, Redshift, Lens (optics), law.invention, law, Sky, media_common.quotation_subject, media_common, Astrophysics, Astronomy, Quasar, Spectrograph, Physics, Galaxy
Funded by
NSF| Collaborative Research: Accurate cosmology with strong gravitational lens time delays
Project
  • Funder: National Science Foundation (NSF)
  • Project Code: 1450141
  • Funding stream: Directorate for Mathematical & Physical Sciences | Division of Astronomical Sciences
,
NSF| Collaborative Research: Accurate Cosmology with Strong Gravitational Lens Time Delays
Project
  • Funder: National Science Foundation (NSF)
  • Project Code: 1312329
  • Funding stream: Directorate for Mathematical & Physical Sciences | Division of Astronomical Sciences

Agnello A., et al., 2015, MNRAS, 454, 1260 Agnello A., Grillo C., Jones T., Treu T., Bonamigo M., Suyu S. H., 2017, preprint, (arXiv:1702.03942) Anguita T., Schmidt R. W., Turner E. L., Wambsganss J., Webster R. L., Loomis K. A., Long D., McMillan R., 2008, AA, 480, 327 Astropy Collaboration et al., 2013, AA, 558, A33 Bonvin V., Tewes M., Courbin F., Kuntzer T., Sluse D., Meylan G., 2016, AA, 585, A88 Braibant L., Hutsemekers D., Sluse D., Anguita T., Garc aVergara C. J., 2014, AA, 565, L11 Braibant L., Hutsemekers D., Sluse D., Anguita T., 2016, AA, 592, A23 Browne I. W. A., et al., 2003, MNRAS, 341, 13 Buzzoni B., et al., 1984, The Messenger, 38, 9 Dalal N., Kochanek C. S., 2002, ApJ, 572, 25 Dawson K. S., et al., 2013, AJ, 145, 10 Diehl H. T., et al., 2014, in Observatory Operations: Strategies, Processes, and Systems V. p. 91490V, doi:10.1117/12.2056982 Ding X., et al., 2017, MNRAS, 465, 4634 Eigenbrod A., Courbin F., Meylan G., Agol E., Anguita T., Schmidt R. W., Wambsganss J., 2008, AA, 490, 933 Falco E. E., et al., 1999, ApJ, 523, 617 Inada N., et al., 2012, AJ, 143, 119 Keeton C. R., 2011, GRAVLENS: Computational Methods for Gravitational Lensing, Astrophysics Source Code Library (ascl:1102.003) King L. J., Browne I. W. A., Marlow D. R., Patnaik A. R., Wilkinson P. N., 1999, MNRAS, 307, 225 Kochanek C. S., 2004, ApJ, 605, 58 Larkin J., et al., 2006, in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series. p.

Abstract
We present the discovery of 3 quasar lenses in the Sloan Digital Sky Survey (SDSS), selected using two novel photometry-based selection techniques. The J0941+0518 system, with two point sources separated by 5.46" on either side of a galaxy, has source and lens redshifts $z_s = 1.54$ and $z_l = 0.343$. The AO-assisted images of J2211+1929 show two point sources separated by 1.04", corresponding to the same quasar at $z_s = 1.07,$ besides the lens galaxy and Einstein ring. Images of J2257+2349 show two point sources separated by 1.67" on either side of an E/S0 galaxy. The extracted spectra show two images of the same quasar at redshift $z_s = 2.10$. In total, the ...
Persistent Identifiers
Subjects
free text keywords: Astrophysics - Astrophysics of Galaxies, Space and Planetary Science, Astronomy and Astrophysics, Photometry (optics), Einstein ring, symbols.namesake, symbols, Redshift, Lens (optics), law.invention, law, Sky, media_common.quotation_subject, media_common, Astrophysics, Astronomy, Quasar, Spectrograph, Physics, Galaxy
Funded by
NSF| Collaborative Research: Accurate cosmology with strong gravitational lens time delays
Project
  • Funder: National Science Foundation (NSF)
  • Project Code: 1450141
  • Funding stream: Directorate for Mathematical & Physical Sciences | Division of Astronomical Sciences
,
NSF| Collaborative Research: Accurate Cosmology with Strong Gravitational Lens Time Delays
Project
  • Funder: National Science Foundation (NSF)
  • Project Code: 1312329
  • Funding stream: Directorate for Mathematical & Physical Sciences | Division of Astronomical Sciences

Agnello A., et al., 2015, MNRAS, 454, 1260 Agnello A., Grillo C., Jones T., Treu T., Bonamigo M., Suyu S. H., 2017, preprint, (arXiv:1702.03942) Anguita T., Schmidt R. W., Turner E. L., Wambsganss J., Webster R. L., Loomis K. A., Long D., McMillan R., 2008, AA, 480, 327 Astropy Collaboration et al., 2013, AA, 558, A33 Bonvin V., Tewes M., Courbin F., Kuntzer T., Sluse D., Meylan G., 2016, AA, 585, A88 Braibant L., Hutsemekers D., Sluse D., Anguita T., Garc aVergara C. J., 2014, AA, 565, L11 Braibant L., Hutsemekers D., Sluse D., Anguita T., 2016, AA, 592, A23 Browne I. W. A., et al., 2003, MNRAS, 341, 13 Buzzoni B., et al., 1984, The Messenger, 38, 9 Dalal N., Kochanek C. S., 2002, ApJ, 572, 25 Dawson K. S., et al., 2013, AJ, 145, 10 Diehl H. T., et al., 2014, in Observatory Operations: Strategies, Processes, and Systems V. p. 91490V, doi:10.1117/12.2056982 Ding X., et al., 2017, MNRAS, 465, 4634 Eigenbrod A., Courbin F., Meylan G., Agol E., Anguita T., Schmidt R. W., Wambsganss J., 2008, AA, 490, 933 Falco E. E., et al., 1999, ApJ, 523, 617 Inada N., et al., 2012, AJ, 143, 119 Keeton C. R., 2011, GRAVLENS: Computational Methods for Gravitational Lensing, Astrophysics Source Code Library (ascl:1102.003) King L. J., Browne I. W. A., Marlow D. R., Patnaik A. R., Wilkinson P. N., 1999, MNRAS, 307, 225 Kochanek C. S., 2004, ApJ, 605, 58 Larkin J., et al., 2006, in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series. p.

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