IC 4296 - A double-double radio galaxy

Details IC 4296 - A double-double radio galaxy IC 4296 - A double-double radio galaxy

Mar 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977mnras.178..525g&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 178, Mar. 1977, p. 525-531.

Astronomy and Astrophysics

Astronomy

21

Astronomical Maps, Galactic Structure, Luminous Intensity, Radiant Flux Density, Radio Galaxies, Contours, Intergalactic Media, Monochromatic Radiation, Radio Astronomy

Scientific paper

Results are reported for two separate observations of the radio source PKS 1333-33 (identified with the low-luminosity radio galaxy IC 4296) made at 1415 MHz with a resolution of approximately 50 arcsec. A full-resolution map of the central region of the source at 1415 MHz is presented, the total flux density in the central components is measured as 3 Jy, and the galaxy is found to be 'bent' inasmuch as the peaks of the outer double structure are displaced to the south of a line connecting the peaks of the inner double structure by about 3 arcmin or 68 kpc. It is shown that all three source components have a spectral index of approximately -0.56 and that PKS 1333-33 is a 'double-double' radio galaxy. The conclusion is made that interaction with the intergalactic medium could explain both the 'bent' nature of the galaxy and the observed unequal separation of the outer components.

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