II ZW 1305.4 + 2941 at Z = 0.24 - Another rich, red, compact cluster

Details II ZW 1305.4 + 2941 at Z = 0.24 - Another rich, red, compact cluster II ZW 1305.4 + 2941 at Z = 0.24 - Another rich, red, compact cluster

Oct 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...333..586k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 333, Oct. 15, 1988, p. 586-593. Research supported by the United States-Ita

Astronomy and Astrophysics

Astrophysics

18

Astronomical Photometry, Color-Color Diagram, Galactic Clusters, Nuclear Astrophysics, Red Shift, Stellar Color, Absorption Spectra, Balmer Series, Line Spectra, Spatial Distribution

Scientific paper

Multicolor photographic photometry of a rich Bautz-Morgan type I cluster of galaxies at z = 0.24 is used to study its spatial and color distributions. A foreground cluster is recognized from the distribution of galaxies in a two-color diagram that is calibrated with spectroscopic redshifts in the same field. This foreground cluster is statistically removed from the distant cluster counts. No evidence is found for an excess of blue galaxies as defined by Butcher and Oemler (1978, 1984). The blue fraction parameter equals -0.01 + or - 0.07 after corrections for galaxies in the foreground.

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