Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...270l...1w&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 270, no. 1-2, p. L1-L4.
Astronomy and Astrophysics
Astrophysics
6
Galactic Clusters, Galactic Evolution, Gravitational Lenses, Arcs, Astronomical Photography, Luminosity
Scientific paper
The expected number of giant luminous arcs in very rich clusters of galaxies is estimated with Henry et al.'s (1992) scenario of strong X-ray luminosity evolution derived from the Einstein Extended Medium Sensitivity Survey. It is shown that this evolution model provides much fewer rich clusters at intermediate redshift as hosts for giant luminous arcs than does the no-evolution model. Taking into account the presently known giant luminous arc events leads to the preliminary conclusion that the very rich clusters of galaxies might not undergo a strong number evolution after z = 0.6, unless there exists a large number of blue galaxies at redshift of about 1. It is then suggested that a complete sample of giant luminous arcs be used to test the evolutionary scenario for rich clusters of galaxies.
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