publication . Article . Preprint . 2015

Discovery of two gravitationally lensed quasars in the Dark Energy Survey

Pablo Fosalba; E. Bertin; Kyler Kuehn; E. Buckley-Geer; T. D. Abbott; Frederic Courbin; Risa H. Wechsler; D. L. Burke; A. Roodman; F. Sobreira; ...
Open Access
  • Published: 01 Aug 2015
  • Publisher: eScholarship, University of California
Abstract
We present spectroscopic confirmation of two new lensed quasars via data obtained at the 6.5m Magellan/Baade Telescope. The lens candidates have been selected from the Dark Energy Survey (DES) and WISE based on their multi-band photometry and extended morphology in DES images. Images of DES J0115-5244 show two blue point sources at either side of a red galaxy. Our long-slit data confirm that both point sources are images of the same quasar at $z_{s}=1.64.$ The Einstein Radius estimated from the DES images is $0.51$". DES J2200+0110 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 i...
Subjects
arXiv: Astrophysics::Cosmology and Extragalactic AstrophysicsAstrophysics::Galaxy AstrophysicsAstrophysics::Solar and Stellar AstrophysicsAstrophysics::Instrumentation and Methods for Astrophysics
free text keywords: strong [gravitational lensing], observational [methods], statistical [methods], emission lines [quasars], astro-ph.GA, astro-ph.CO, Astronomy & Astrophysics, Astronomical and Space Sciences, Astrophysics - Astrophysics of Galaxies, Astrophysics - Cosmology and Nongalactic Astrophysics, RCUK, STFC, /dk/atira/pure/core/subjects/cosmology, Cosmology and Gravitation, QB, Physics, Galaxy, Einstein Cross, symbols.namesake, symbols, Galaxias, biology.organism_classification, biology, Einstein radius, Photometry (optics), Astrophysics, Quasar, Astronomy, Sky, media_common.quotation_subject, media_common, Infrared
Funded by
SNSF| Pressedelikte und Pressejustiz in Osteuropa
Project
  • Funder: Swiss National Science Foundation (SNSF)
  • Project Code: 1000-000515
  • Funding stream: Project funding | Project funding (Div. I-III)
,
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
,
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: The Dark Energy Survey Data Management Operations
Project
  • Funder: National Science Foundation (NSF)
  • Project Code: 1138766
  • Funding stream: Directorate for Mathematical & Physical Sciences | Division of Astronomical Sciences
,
EC| COGS
Project
COGS
Capitalizing on Gravitational Shear
  • Funder: European Commission (EC)
  • Project Code: 240672
  • Funding stream: FP7 | SP2 | ERC
71 references, page 1 of 5

Agnello A., Kelly B. C., Treu T., Marshall P. J., 2015, MNRAS, 448, 1446 Anguita T., Schmidt R. W., Turner E. L., Wambsganss J., Webster R. L., Loomis K. A., Long D., McMillan R., 2008, A&A, 480, 327

Assef R. J. et al., 2013, ApJ, 772, 26

Braibant L., Hutseme´kers D., Sluse D., Anguita T., Garc´ıa-Vergara C. J., 2014, A&A, 565, L11

Chan J. H. H., Suyu S. H., Chiueh T., More A., Marshall P. J., Coupon J., Oguri M., Price P., 2015, ApJ, 807, 138

Courbin F., Saha P., Schechter P. L., 2002, 608, 1

Dalal N., Kochanek C. S., 2002, ApJ, 572, 25

Diehl H. T. et al., 2014, in Peck A. B., Benn C. R., Seaman R. L., eds, Proc. SPIE Conf. Ser. Vol. 9149, The Dark Energy Survey and operations: Year 1. SPIE, Bellingham, p. 91490V

Dressler A. et al., 2011, PASP, 123, 288

Eigenbrod A., Courbin F., Meylan G., Agol E., Anguita T., Schmidt R. W., Wambsganss J., 2008, A&A, 490, 933

Flaugher B. et al., 2015, preprint (arXiv:e-prints)

Guerras E., Mediavilla E., Jimenez-Vicente J., Kochanek C. S., Mun˜oz J. A., Falco E., Motta V., 2013, ApJ, 764, 160

Inada N. et al., 2008, AJ, 135, 496

Jime´nez-Vicente J., Mediavilla E., Kochanek C. S., Mun˜oz J. A., 2015, ApJ, 799, 149

Mao S., Schneider P., 1998, MNRAS, 295, 587

Metcalf R. B., 2002, ApJ, 580, 696

71 references, page 1 of 5
Any information missing or wrong?Report an Issue