Properties of nearby clusters of galaxies. I - A 195, A 465, A 1185, A 1213, A 1413, A 1775, A 2319 and A 2597

Details Properties of nearby clusters of galaxies. I - A 195, A 465, A 1185, A 1213, A 1413, A 1775, A 2319 and A 2597 Properties of nearby clusters of galaxies. I - A 195, A 465, A 1185, A 1213, A 1413, A 1775, A 2319 and A 2597

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26as...94..327t&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 94, no. 2, Aug. 1992, p. 327-357. Research supported by Univ

Astronomy and Astrophysics

Astrophysics

22

Cosmology, Data Reduction, Galactic Clusters, Image Processing, Monte Carlo Method, Astronomical Catalogs, Computerized Simulation, Galactic Structure, Schmidt Telescopes

Scientific paper

A study of the properties of nearby clusters of galaxies has been undertaken. This paper describes the data, derived from automated scans of photographic plates. Different methods for the evaluation of cluster center, ellipticity, and orientation are compared, and errors are estimated by Monte Carlo simulations. Results are presented of the analysis of 1256 galaxies brighter than m3 + 3 in eight Abell clusters. It is found that different methods give consistent estimates of ellipticity and orientation, provided the radial dependence of these quantities is taken into account. It is also found that central densities are consistent with isothermal fits if the center is selected as the baricenter of the cluster. For each galaxy, rectangular coordinates, magnitude, size, ellipticity, and orientation are given. Each cluster is provided with identification maps and contour maps of galaxy surface density.

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