The clusters of galaxies A2197 and A2199

Details The clusters of galaxies A2197 and A2199 The clusters of galaxies A2197 and A2199

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.239..459d&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 239, July 15, 1989, p. 459-478.

Astronomy and Astrophysics

Astronomy

15

Color-Magnitude Diagram, Galactic Clusters, Virial Theorem, Astronomical Maps, Astronomical Photography, Celestial Mechanics, Galactic Mass, Luminosity, Spatial Distribution

Scientific paper

Radii, b26 magnitudes, (b-r) colors, position angles, and ellipticities have been measured for 6925 galaxies in a 5-sq deg field enclosing the close pair of rich clusters A2197 and A2199. The color-magnitude diagrams are consistent with model diagrams based on a field luminosity function and suitable K-corrections, and they provide a means of separating cluster spirals and early type galaxies. The results show that the inner region of A2199 has a steeper luminosity function than its outer parts, and that the surface density and velocity dispersion profiles of A2199 are well represented by isotropic orbits.

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