Binary, interacting, and merging galaxies and dark matter

Details Binary, interacting, and merging galaxies and dark matter Binary, interacting, and merging galaxies and dark matter

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989aj.....98.1557j&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 98, Nov. 1989, p. 1557-1562.

Astronomy and Astrophysics

Astronomy

17

Dark Matter, Energy Transfer, Far Infrared Radiation, Galactic Structure, Gravitational Fields, Infrared Astronomy Satellite, Luminosity, Star Formation Rate

Scientific paper

The distribution of FIR emission as a function of the ratio of separations to sizes of interacting systems is examined. An upper-bound luminosity is found that is consistent with a simple energy-transfer interaction between the components. Factors leading to the scatter in the distribution of L(IR) and L(IR)/L(B) are discussed. It is hypothesized that dynamic friction of dark-matter halos in binary galaxies may lead to orbit decay and to strongly interacting and merging systems. In this way the frequency of occurrence of such systems may be explained as a significant fraction of the abundance of binaries.

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