2237 + 0305: A new and unusual gravitational lens

Details 2237 + 0305: A new and unusual gravitational lens 2237 + 0305: A new and unusual gravitational lens

May 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985aj.....90..691h&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 90, May 1985, p. 691-696. Research supported by the Smithsonian Institution.

Astronomy and Astrophysics

Astronomy

284

Flux Density, Gravitational Lenses, Quasars, Radio Astronomy, Red Shift, Spiral Galaxies, Absorption Spectra, Emission Spectra, Galactic Structure, Lyman Spectra, Spectrum Analysis

Scientific paper

The authors have discovered a new gravitational lens system which consists of a quasar at z = 1.695 nearly centered on a 15 mag spiral galaxy, 2237+0305, at z = 0.0394. At 2arcsec resolution, only a single optical image of the quasar is visible; its centroid is located within approximately 0arcsec.3 of the center of the galaxy. "Snapshot" observations at the VLA yielded no detectable radio radiation, placing an upper limit of about 0.5 mJy on the combined flux density of the galaxy and quasar at λ = 6 cm. The authors discuss a simple gravitational lens model that accounts for these observations.

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