The triple radio source 0023 + 171 - A candidate for a dark gravitational lens

Abstract

view Abstract Citations (29) References (30) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Triple Radio Source 0023+171: A Candidate for a Dark Gravitational Lens Hewitt, J. N. ; Turner, E. L. ; Lawrence, C. R. ; Schneider, D. P. ; Gunn, J. E. ; Bennett, C. L. ; Burke, B. F. ; Mahoney, J. H. ; Langston, G. I. ; Schmidt, M. ; Oke, J. B. ; Hoessel, J. G. Abstract In the course of a radio-optical search for gravitational lenses, a multiple radio source, 0023 + 171, was discovered, which has two optical counterparts at z = 0.946 separated by 5 arcsec. Their redshifts are the same within the measurement error, and their optical spectra show the same emission lines with the same relative intensities. One interpretation of these measurements is that the images of 0023 + 171 are gravitationally lensed. However, because the radio morphology is complex and the optical objects are faint, the existing data cannot exclude another interpretation, i.e., that the components of 0023 + 171 are two physically associated radio galaxies or two components of a single galaxy. The only possible evidence in favor of a lensing object is extremely faint optical emission located approximately 1 arcsec from one of the images. If this multiple source is indeed gravitationally lensed, the combination of available data imply a mass-to-light ratio for the lensing matter equal to about 1000. Publication: The Astrophysical Journal Pub Date: October 1987 DOI: 10.1086/165663 Bibcode: 1987ApJ...321..706H Keywords: Gravitational Lenses; Mass To Light Ratios; Quasars; Radio Galaxies; Radio Sources (Astronomy); Red Shift; Computational Astrophysics; Morphology; Astrophysics; GALAXIES: INDIVIDUAL ALPHANUMERIC: 0023; 171; GALAXIES: STRUCTURE; GRAVITATION; RADIO SOURCES: GALAXIES full text sources ADS | data products SIMBAD (8) NED (4)