Observations of a distant cluster of galaxies

Details Observations of a distant cluster of galaxies Observations of a distant cluster of galaxies

Nov 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...217..951k&link_type=abstract

Astrophysical Journal, Part 1, vol. 217, Nov. 1, 1977, p. 951-957.

Astronomy and Astrophysics

Astrophysics

25

Astronomical Photography, Galactic Clusters, Red Shift, Astronomical Photometry, Continuous Spectra, Galactic Evolution, Image Tubes

Scientific paper

Image-tube-dissector scans of the central galaxy in the faint cluster 1305+2952 over the wavelength range from 4000 to 7100 A are examined. The strongest and most prominent features are shown to be a step in the continuum at 5140 A and a very large (R-I) color index. A redshift of 0.947 is taken to be the most probable value that is consistent with the observations. It is concluded that if this redshift is correct, the central galaxy is much more luminous and much bluer than standard (local) first-ranked cluster galaxies.

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