Wide triplets of galaxies and the problem of hidden mass

Details Wide triplets of galaxies and the problem of hidden mass Wide triplets of galaxies and the problem of hidden mass

Jun 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995azh....72..308t&link_type=abstract

Astronomicheskij Zhurnal, vol. 72, p. 308

Astronomy and Astrophysics

Astronomy

9

Galactic Mass, Astronomical Catalogs, Size Distribution, Statistical Analysis, Optical Properties, Visible Spectrum, Velocity Distribution

Scientific paper

The observed properties of a sample of triple galaxies drawn from two catalogs of galaxy groups are analyzed. The triple systems were broken down into probably physical and probably optical triplets. The distribution of the ensemble of these systems in size, velocity dispersion, and virial mass was found, and the corresponding median values were determined. Statistical estimates revealed substantial hidden mass in the systems under study. Configuration properties of the triplets were investigated. Our sample was compared to Karachentsev's triplets. The triplets in our sample are shown to differ from Karachentsev's by appreciably larger sizes; in this respect, they may be called wide, whereas those of Karachentsev are compact.

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