High-resolution CCD imaging and derived gravitational lens models of 2237+0305

D. P. Schneider, E. L. Turner, J. E. Gunn, J. N. Hewitt, M. Schmidt, C. R. Lawrence

Research output: Contribution to journalArticlepeer-review

Abstract

Images of the gravitational lens 2237+0305 acquired in good seeing (FWHM ≤1arcsec) resolve the system into several components. At least five components reside in the central few arcseconds of the object: the nucleus of the galaxy (lens) and four point sources in a ringlike formation approximately centered on the galaxy. The diameter of this "ring" is ≈1.7arcsec. The four point sources are all distinctly bluer than the galaxy, but do not have identical colors. A simple model that assumes that these four objects are indeed images of the quasar and treats the lens as a constant mass-to-light ratio, elliptical, de Vaucouleurs bulge reproduces the observed configuration remarkably well.
Original languageEnglish (US)
Pages (from-to)1619-1628
JournalAstronomical Journal
Volume95
DOIs
StatePublished - Jun 1 1988

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