Hosts and Alignment Effect in 0.5 < z < 1 radio sources

Details Hosts and Alignment Effect in 0.5 < z < 1 radio sources Hosts and Alignment Effect in 0.5 < z < 1 radio sources

1998-09-11

arxiv.org/abs/astro-ph/9809155v1

Astronomy and Astrophysics

Astrophysics

to appear in the proceedings of "The Most Distant Radiogalaxies", Amsterdam, 15-17th October 1997. Uses knawproc.cls

Scientific paper

R- and I- band images with good seeing at the NOT of the hosts of a sample of 7C radio galaxies at z ~ 0.7 (with mean radio flux 20 times fainter than the 3C sample) show some evidence of radio-optical alignment. A quantitative analysis of the alignment in this sample and in a corresponding 3C sample from HST archival data indicates that the percentage of aligned flux may be lower and of smaller spatial scale in the faint radio sample. Studies of the aligned material in z ~ 1 3C source hosts indicate that the quasar extensions also show some aligned flux, though much of it is due to optical synchrotron radiation.

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