Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988mnras.233..907f&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 233, Aug. 15, 1988, p. 907-921.
Astronomy and Astrophysics
Astronomy
53
Far Infrared Radiation, Galactic Radiation, Galactic Radio Waves, Late Stars, Nonthermal Radiation, Star Formation Rate, Infrared Astronomy Satellite, Sky Surveys (Astronomy), Spiral Galaxies, Starburst Galaxies
Scientific paper
The tight correlation between FIR and nonthermal radio luminosities for late-type galaxies is now well established. Using data from the IRAS Point Source Catalog and the 6C radio survey at 151 MHz, it is shown that this correlation is well-fitted by a power law with an index, gamma = 0.86 + or - 0.03, which is consistent with other published FIR/radio correlations. This result is interpreted in the light of proposals that far-infrared emission is due partly to recently formed massive stars and partly to an order population of stars. By means of a simple model, this latter component is removed from the FIR fluxes and the remaining emission is found to be consistent with gamma = 0.97 + or - 0.06, a result which is only weakly dependent on the model parameters. This strongly supports the hypothesis that disk radio emission is related to the formation rate of massive stars, and not to the old stellar population.
Alexander Paul
Cox Jennifer M.
Fitt A. J.
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