Photometry of Distant Clusters of Galaxies - Evolutionary Features in the Cluster 2158+0351 = z= 0.45

Details Photometry of Distant Clusters of Galaxies - Evolutionary Features in the Cluster 2158+0351 = z= 0.45 Photometry of Distant Clusters of Galaxies - Evolutionary Features in the Cluster 2158+0351 = z= 0.45

Oct 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.246..576m&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 246, NO.4/OCT15, P. 576, 1990

Astronomy and Astrophysics

Astronomy

16

Scientific paper

Results of detailed three-colour photometry of the distant cluster 21 58 + 035 (z = 0.445) are presented. A photometric catalogue has been produced using the INVENTORY package, for which we give an estimate of completeness and photometry errors. In total we measured Gunn g, r, i magnitudes for 294 objects, down to r = 23.5, with a typical error of 0.1 mag. On the basis of a statistical analysis, about 60 per cent of these are suggested to be cluster members. Luminosity functions ar shown along with colour-magnitude and two-colour diagrams. We find that the bright- cluster galaxy population is dominated by ellipticals, while a population of spirals becomes relevant at the faint luminosities. Such an overabundance of faint spiral leads us to calculate a high fraction of blue objects, according to the Butcher-Oemler effect. We find f_B_ = 0.3 +/- 0.13. We evidence possible photometric effects on magnitudes and colours due to galactic evolution. In particular, elliptical galaxies in the cluster are recognized to be bluer than present-day descendants, and the first-rank galaxy is intrinsically brighter by about 0.8 mag. An independent estimate of the redshift of the cluster, through photometric properties of its galaxy population, - attempted, deriving z = 0.44 +/- 0.05. This is obtained taking into account appropriate evolutionary k-corrections from population-synthesis models. The importance of such a correction when studying high redshift (young) galaxies is stressed.

Affiliated with

Also associated with

No associations

Rating

Photometry of Distant Clusters of Galaxies - Evolutionary Features in the Cluster 2158+0351 = z= 0.45 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Photometry of Distant Clusters of Galaxies - Evolutionary Features in the Cluster 2158+0351 = z= 0.45, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photometry of Distant Clusters of Galaxies - Evolutionary Features in the Cluster 2158+0351 = z= 0.45 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1304718