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Astron. Astrophys. 327, 479-482 (1997)

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5. The role of the Seyfert and ejection

The Seyfert NGC6212 at redshift z = .03 falls only 4.7 arc min from 3C 345 (z = .59). This is very similar to the associations of low redshift NGC galaxies with bright radio quasars found by Burbidge et al. (1971). In two of these cases even the redshifts of the the radio quasars were similar (3C275.1 at z = .56 and 3C232 at z = .53). In the latter two cases, elongated X-ray extensions or jets, from what turned out to be active NGC galaxies, were found to be pointing to the the quasars in ROSAT PSPC observations (Arp 1996).

My conclusion from these previous cases was that the bright radio quasars originated from the adjacent Seyfert and that they were in turn ejecting generally higher redshift quasars in opposite directions. In the configuration shown here in Fig. 2 it is not clear whether the quasars of z = 1.36 and 1.38 and z = 1.41 and 1.47 originated in ejection from the Seyfert or 3C 345. But the stronger X-ray quasars of lower redshift are very well aligned with 3C 345 and indicate origin from that source as in the lines of X-ray sources originating from 3C275.1 and 3C232.

It is also noticeable that the quasar redshifts on one side of the 3C 345/NGC6212 center, fall systematically higher than the quantized values, and those on the other side fall systematically lower. This effect is to be expected if quasars at quantized values are ejected toward and away from the observer from the center with projected velocities of some hundredths of c.

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© European Southern Observatory (ESO) 1997

Online publication: April 6, 1998
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