Deviations from the FIR-radio correlation at large FIR luminosities

Details Deviations from the FIR-radio correlation at large FIR luminosities Deviations from the FIR-radio correlation at large FIR luminosities

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ap%26ss.157..287s&link_type=abstract

(Instituto de Astrofisica de Canarias and Comision Interministerial de Ciencia y Tecnologia, Summer School on Evolutionary Pheno

Astronomy and Astrophysics

Astrophysics

4

Far Infrared Radiation, Galactic Radiation, Radio Spectra, Luminosity, Very Large Array (Vla)

Scientific paper

The radio properties of FIR-luminous galaxies have been investigated with the VLA (at 1.4, 5, and some at 15.4 GHz), the Cambridge 5-km telescope (at 5 GHz), and the Cambridge Low-Frequency Synthesis Telescope (151 MHz). The existence of a very strong correlation between FIR and radio luminosities has been noted by a large number of authors and is known to extend from dwarf systems to starburst galaxies. However, for some of the present sample, large deviations from the FIR-radio correlation are found in the sense that these galaxies lie towards the FIR-bright/radio-faint region of the diagram, particularly at 151 MHz. The spectrum of Arp 220 has an unusual low-frequency turnover which is successfully modeled as a thermally absorbed synchrotron source.

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