Two New Gravitationally Lensed Double Quasars from theSloan Digital Sky Survey

Journal Article · Thu Sep 28 00:00:00 EDT 2006 · The Astronomical Journal

DOI:https://doi.org/10.1086/500591· OSTI ID:892593

Inada, Naohisa; Oguri, Masamune; Becker, Robert H; White, Richard L; Kayo, Issha; Kochanek, Christopher S; Hall, Patrick B; Schneider, Donald P; York, Donald G; Richards, Gordon T

We report the discoveries of the two-image gravitationally lensed quasars, SDSS J0746+4403 and SDSS J1406+6126, selected from the Sloan Digital Sky Survey (SDSS). SDSS J0746+4403, which will be included in our lens sample for statistics and cosmology, has a source redshift of z{sub s} = 2.00, an estimated lens redshift of z{sub l} {approx} 0.3, and an image separation of 1.08''. SDSS J1406+6126 has a source redshift of z{sub s} = 2.13, a spectroscopically measured lens redshift of z{sub l} = 0.27, and an image separation of 1.98''. We find that the two quasar images of SDSS J1406+6126 have different intervening Mg II absorption strengths, which are suggestive of large variations of absorbers on kpc scales. The positions and fluxes of both the lensed quasar systems are easily reproduced by simple mass models with reasonable parameter values. These objects bring to 18 the number of lensed quasars that have been discovered from the SDSS data.

• Research Organization: Stanford Linear Accelerator Center (SLAC)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 892593
• Report Number(s): SLAC-PUB-12133; astro-ph/0609696
• Journal Information: The Astronomical Journal, Journal Name: The Astronomical Journal
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION
Astrophysics
ASTRO
GRQC
COSMOLOGY
QUASARS
SKY
STATISTICS