Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988aj.....95.1619s&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 95, June 1988, p. 1619-1628. Research supported by the John D. and Catherine T. MacA
Astronomy and Astrophysics
Astronomy
118
Astronomical Photography, Charge Coupled Devices, Galactic Nuclei, Gravitational Lenses, High Resolution, Mass To Light Ratios, Galactic Clusters, Quasars, Red Shift
Scientific paper
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.
Gunn James E.
Hewitt Jacqueline N.
Lawrence Charles R.
Schmidt Matthias
Schneider David P.
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