The variation of spectral index with luminosity for radio galaxies

Details The variation of spectral index with luminosity for radio galaxies The variation of spectral index with luminosity for radio galaxies

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ap%26ss.162..349o&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 162, no. 2, Dec. 1989, p. 349-352.

Astronomy and Astrophysics

Astronomy

4

Luminosity, Radio Galaxies, Radio Spectra, Red Shift, Spectral Energy Distribution, Astronomical Catalogs, Correlation, Flux Density, Sky Surveys (Astronomy)

Scientific paper

The variation of spectral index with luminosity, at 1.4 GHz, was investigated for Fanaroff and Riley type II galaxies and also for type I and type I/II galaxies. To reduce the effect of the redshift dependence of luminosity, samples which did not have widely different median redshifts were used and the data was binned into redshift ranges. By a comparison of the median spectral indices in different redshift bins for FR II galaxies, no dependence of spectral index was formed on redshift. However, an increase in spectral index with increasing luminosity was found. The results for FR I and FR I/II galaxies were similar to those for the FR II galaxies.

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