A gravitational lensing model of the strange ring-like structure in A370.
Abstract
Since 1985, the discovery of giant luminous arcs in the center of distant rich clusters still remains a puzzle for astronomers. The first structure had been discovered in A370, which is by far the highest redshift Abell cluster (z = 0.374). In this paper new data are presented on the arc in A370, especially the spectrum of its eastern part, from which none of the features at the A370 redshift can be identified, except one, from which we derive the redshift z = 0.59. An interpretation and a model of this very peculiar structure are then presented as a case of gravitational lensing of a galaxy by a foreground cluster.
- Publication:
-
High Redshift and Primeval Galaxies
- Pub Date:
- 1987
- Bibcode:
- 1987hrpg.work..467H
- Keywords:
-
- Astronomical Models;
- Charge Coupled Devices;
- Galactic Clusters;
- Gravitational Lenses;
- Red Shift;
- Emission Spectra;
- Line Spectra;
- Morphology;
- Star Formation;
- Telescopes;
- Astrophysics;
- Clusters of Galaxies:Gravitational Lenses;
- Gravitational Lenses:Clusters of Galaxies