English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We report the discoveries of two, two-image gravitationally lensed quasarsselected from the Sloan Digital Sky Survey: SDSS J0806+2006 at z_s=1.540 andSDSS J1353+1138 at z_s=1.629 with image separations of 1.40" and 1.41"respectively. Spectroscopic and optical/near-infrared imaging follow-upobservations show that the quasar images have identical redshifts and possessextended objects between the images that are likely to be lens galaxies atz_l~0.6 in SDSS J0806+2006 and z_l~0.3 in SDSS J1353+1138. The field of SDSSJ0806+2006 contains several nearby galaxies that may significantly perturb thesystem, and SDSS J1353+1138 has an extra component near its Einstein ring thatis probably a foreground star. Simple mass models with reasonable parametersreproduce the quasar positions and fluxes of both systems.Comment: 27 pages, 7 figures, The Astronomical Journal accepte

SDSS J0806+2006 and SDSS J1353+1138: Two New Gravitationally Lensed Quasars from the Sloan Digital Sky Survey