Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aj....109.1582a&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 109, no. 4, p. 1582-1591
Astronomy and Astrophysics
Astronomy
15
Correlation, Far Infrared Radiation, Galactic Clusters, Infrared Astronomy, Radio Astronomy, Radio Emission, Spiral Galaxies, Astronomical Models, Correlation Coefficients, Extragalactic Radio Sources, Galactic Cosmic Rays, Interacting Galaxies, Interstellar Matter
Scientific paper
We present a study of the far-infrared (FIR) and radio emission in a sample of group and cluster spiral galaxies. Galaxies are separated into rich and poor cluster samples based the value of the galaxy-galaxy correlation coeffiient (Andersen & Owen 1994) of their parent cluster. Galaxies in the rich clusters have lower-FIR-radio ratios than a radio selected sample of field galaxies, while galaxies in poor clusters do not. We find that the degree of radio enhancement with respect to FIR emission is consistent with a model where the radio emitting interstellar medium (ISM) is compressed by the ram pressure as the galaxy moves through the intracluster medium. We suggest that galaxy-galaxy tidal interactions are important in the poorer clusters, but in general of much less importance in richer clusters.
Andersen Victor
Owen Frazer N.
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