Is 3C324 the first gravitationally lensed giant galaxy?

Details Is 3C324 the first gravitationally lensed giant galaxy? Is 3C324 the first gravitationally lensed giant galaxy?

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987natur.326..268l&link_type=abstract

Nature (ISSN 0028-0836), vol. 326, March 19, 1987, p. 268, 269.

Astronomy and Astrophysics

Astronomy

30

Astronomical Spectroscopy, Galactic Structure, Gravitational Lenses, Radio Galaxies, Charge Coupled Devices, Interference Grating, Line Spectra, Luminosity, Red Shift

Scientific paper

The radiogalaxy 3C 324 has recently raised considerable interest as one of the most distant z = 1.206) and luminous known galaxies. The authors report new observations of this object at Canada-France-Hawaii Telescope which confirm their previous predictions of the presence of an intervening gravitational lens. First, a multiple structure is revealed by broad-band imagery. Second, following the identification of an additional line system at z = 0.84, subsequent CCD observations through interferential filters were obtained. In a wavelength range corresponding to an emission line at z = 0.84 only the central component is detected, while only outer components are seen in a range corresponding to a line redshifted by z = 1.206. These observations are interpreted as the first example of gravitational multiple imaging of a giant radiogalaxy by a foreground object.

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