Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981afz....17...53a&link_type=abstract
(Astrofizika, vol. 17, Jan.-Mar. 1981, p. 53-59.) Astrophysics, vol. 17, no. 1, July 1981, p. 28-32. Translation.
Astronomy and Astrophysics
Astrophysics
6
Astronomical Photometry, Brightness, Spiral Galaxies, Elliptical Galaxies, Galactic Clusters, Statistical Correlation
Scientific paper
The mean surface brightness of isolated galaxies and galaxies that are members of systems are compared, in order to obtain information pertaining to the different conditions under which these galaxies were formed. The comparison of the spiral galaxies in the Catalog of Isolated Galaxies (Karachentseva, 1973) and the Catalog of Isolated Pairs (Karachentsev, 1972) reveals that the difference between the mean values of mean surface brightness of the corresponding galaxies equals 0.35. The mean surface brightness of the components of pairs are greater than those of isolated galaxies, indicating the dependence of the former on the separation of the components. The mean value of the mean surface brightness of the components of the pairs reaches that of the isolated galaxies at a distance r = 225 kpc, where the mutual influence of the components of pairs is greatly reduced.
Arakelian M. A.
Magtesian A. P.
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