The Optical Identification of the Luminous Radio Galaxy 0409-752

Details The Optical Identification of the Luminous Radio Galaxy 0409-752 The Optical Identification of the Luminous Radio Galaxy 0409-752

Apr 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...271..435a&link_type=abstract

Astronomy and Astrophysics, Vol.271, NO. 2/APR, P. 435, 1993

Astronomy and Astrophysics

Astrophysics

8

Scientific paper

We have identified the radio source 0409 - 752 with a faint (V = 21.6) galaxy which has emission lines of [O II] 3727 (strong), [O III] 4959, 5007 (strong) and [Ne III] 3869 (weak), consistent with a redshift of 0.694. Assuming a cosmological redshift, and using different values for H_0_ and q_0_, we have computed the absolute luminosity in the range 45-8400 MHz. A careful comparison with radio galaxies Cyg A and 3C 295, taken as reference because they are luminous and their spectra are accurately known in that frequency range, shows that 0409 - 752 is even slightly more powerful. The ratio of radio to optical luminosities for 0409 - 752 is very close to the highest known for radio galaxies. We found that the IRAS point source 04099 - 7514 is actually associated to a S0 galaxy in the field.

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