1343.4+2640 - A close quasar pair

Details 1343.4+2640 - A close quasar pair 1343.4+2640 - A close quasar pair

Jul 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...330..184c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 330, July 1, 1988, p. 184-190.

Astronomy and Astrophysics

Astronomy

22

Charge Coupled Devices, Gravitational Lenses, Line Spectra, Lyman Alpha Radiation, Quasars, Red Shift, Binary Stars, Cosmology, Pixels, Sky Surveys (Astronomy)

Scientific paper

Two quasars of virtually identical redshift separated by 9arcsec.5 have been discovered on a CFHT grens plate. Subsequent spectroscopy reveals substantial differences in their spectral line strengths which appear to be incompatible with a gravitational lens hypothesis. Furthermore, deep CCD images of the field do not show any indication of a lensing galaxy or extended Lyα emission. It is likely that these quasars are a physically related pair, possibly residing in a cluster of galaxies at z = 2.03.

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