Thermal infrared and nonthermal radio : remarkable correlation in disks of galaxies.

November 1985 • 1985ApJ...298L...7H

Authors • Helou, G. • Soifer, B. T. • Rowan-Robinson, M.

Abstract • A tight, linear correlation is established between the far-infrared flux measured by IRAS and the nonthermal radio flux density (at 1.4 GHz) from disks of spiral galaxies. This correlation defines a ratio of infrared to radio fluxes that is characteristic of star formation activity. Galaxies with nuclear starbursts seem to follow the correlation. If the far-infrared is reradiated luminosity from young massive stars, then the supernova remnants alone account for less than 10 percent of the radio emission. These results indicate a close coupling between dust heating and cosmic-ray generation and confinement in a wide range of conditions.

Links

• SIMBAD http://simbad.u-strasbg.fr/simbo.pl?bibcode=1985ApJ...298L...7H
• NED https://ned.ipac.caltech.edu/uri/NED::InRefcode/1985ApJ...298L...7H
• GIF http://articles.adsabs.harvard.edu/full/1985ApJ...298L...7H
• ARTICLE http://articles.adsabs.harvard.edu/full/1985ApJ...298L...7H?defaultprint=YES