Two-colour photometry of a sample of faint galaxies

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astronomical Photometry, Galactic Evolution, Galaxies, Astronomical Photography, Brightness, Dwarf Galaxies, Errors, Photographic Plates, Red Shift, Scanning

Scientific paper

Two-color photographic photometry has been carried out on a total sample of 3664 galaxies in two fields, each 1.27 degrees square. The results indicate the existence of an excess of high redshifted (z greater than 0.30) blue galaxies implying a recent evolutionary trend. They also show a population of nearby (z less than 0.08) dwarf galaxies, mostly red with a minimum space density of about 1 per cu Mpc.

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