A new wide-separation gravitational lens candidate

Details A new wide-separation gravitational lens candidate A new wide-separation gravitational lens candidate

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...346l..61h&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 346, Nov. 15, 1989, p. L61-L63.

Astronomy and Astrophysics

Astrophysics

38

Astronomical Spectroscopy, Gravitational Lenses, Quasars, Galactic Clusters, Mass To Light Ratios, Red Shift, Spectral Energy Distribution

Scientific paper

Observational evidence is presented for the existence of a new wide-separation, high-redshift gravitationally lensed quasar Q1429-008. The Q1429-008 system comprises two components, R-band magnitudes m(R) = 17.7 and 20.8. The spectra of the two components are very similar although small systematic differences in the emission-line strengths are probably present. The velocity difference between the two spectra, derived from cross-correlation techniques, is 260 + or - 300 km/s. The observational data are consistent with a deflector of cluster mass and dimensions, at a redshift about 1.5, but such an observer-deflector-source geometry is unlikely a priori. If the deflector is at the 'most likely' redshift, about 0.6, then the lower limit to the deflector mass-to-light ratio is extremely high.

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