Low-luminosity radio sources in early-type galaxies

Details Low-luminosity radio sources in early-type galaxies Low-luminosity radio sources in early-type galaxies

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.240..591s&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 240, Oct. 1, 1989, p. 591-635.

Astronomy and Astrophysics

Astronomy

156

Galactic Radiation, Radio Sources (Astronomy), Astronomical Maps, Continuous Radiation, Ionized Gases, Luminosity, Very Large Array (Vla)

Scientific paper

A sensitive radio continuum survey of 114 nearby E and S0 galaxies has been made to search for weak sources. The radio detection rate is 42 percent, with a flux limit of 0.8 mJy at 5 GHz. By deriving the radio luminosity function for a complete sample, it is shown that most bright early-type galaxies have low-luminosity nonthermal radio sources. Galaxies of similar optical luminosity vary widely in radio luminosity, but a characteristic radio power rises roughly as the optical luminosity squared. S0 galaxies have weaker radio sources on average than elliptical galaxies, but this can be explained by the low luminosity of most S0 bulges relative to ellipticals. No correlation is found between radio power and axial ratio for galaxies with radio luminosities below 10 to the 23rd W/Hz.

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