Journal article
SDSS J102111.02+491330.4: A Newly discovered gravitationally lensed quasar
The Astronomical journal, Vol.131
01 Sep 2005
Abstract
We report follow-up observations of two gravitational lens candidates identified in the Sloan Digital Sky Survey (SDSS) dataset. We have confirmed that SDSS J102111.02+491330.4 is a previously unknown gravitationally lensed quasar. This lens system exhibits two images of a z = 1.72 quasar, with an image separation of 1.14'' {+-} 0.04''. Optical and near-IR imaging of the system reveals the presence of the lensing galaxy between the two quasar images. Observations of SDSS J112012.12+671116.0 indicate that it is more likely a binary quasar than a gravitational lens. This system has two quasars at a redshift of z = 1.49, with an angular separation of 1.49'' {+-} 0.02''. However, the two quasars have markedly different SEDs and no lens galaxy is apparent in optical and near-IR images of this system. We also present a list of 31 SDSS lens candidates which follow-up observations have confirmed are not gravitational lenses.
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Details
- Title
- SDSS J102111.02+491330.4: A Newly discovered gravitationally lensed quasar
- Creators
- Bart PindorDaniel J EisensteinMichael D GreggRobert H BeckerNaohisa InadaMasamune OguriPatrick B HallDavid E JohnstonGordon T RichardsDonald P SchneiderEdwin L TurnerGuido BrasiPhilip M HinzMatthew A KenworthyDoug MillerJ C BarentineHoward J BrewingtonJ BrinkmannMichael HarvanekS J KleinmanJurek Krzesinski
- Publication Details
- The Astronomical journal, Vol.131
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Identifiers
- 991019201362304721