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An X-ray survey of distant rich clusters of galaxies with HEAO 1

DOI

11

Citations

0

References

1980

Year

M. P. Ulmer, Seth Shulman, W. D. Evans, W. N. Johnson, D. P. McNutt, J. F. Meekins, G. H. Share, D. Yentis, K. Wood, E. T. Byram,
The Astrophysical Journal

Abstract

The paper presents a 1-10-keV survey of distance class 4, 5, and 6 Abell clusters using the HEAO 1 NRL large area survey experiment. The survey is a little less than 1/30 of the Abell catalog. Eleven clusters are identified with X-ray sources, and X-ray upper limits are provided for 60 others.