Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988azh....65..225d&link_type=abstract
Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 65, Mar.-Apr. 1988, p. 225-235. In Russian.
Astronomy and Astrophysics
Astronomy
Astronomical Photometry, Elliptical Galaxies, Galactic Clusters, Stellar Mass, Astronomical Catalogs, Circular Orbits, Eccentric Orbits
Scientific paper
Using the information from Karachentsev's catalogue of isolated pairs of the northern hemisphere, the individual photometrical and total dynamical masses of elliptical galaxies in binary EE-type systems are determined. A comparison is made of the mean photometrical masses of the components and the orbital masses of pairs. For noninteracting galaxies, the absence of systematic differences between these masses evidences for the predominance of nearly circular orbits for this type of binary systems. From the differences of the mean estimates of total masses, obtained from dynamical and photometrical data for interacting pairs, the mean orbits' eccentricity is found to be 0.73±0.05. The data obtained lend additional evidence against massive coronae in the galaxies of the considered type of pairs.
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