Radio emission and the optical isophotal twist of radio-loud ellipticals

Details Radio emission and the optical isophotal twist of radio-loud ellipticals Radio emission and the optical isophotal twist of radio-loud ellipticals

2003-08-29

arxiv.org/abs/astro-ph/0308542v1

Astron.Astrophys.410:139,2003

Astronomy and Astrophysics

Astrophysics

3 pages, 2 figures, in press in Astronomy and Astrophysics

Scientific paper

10.1051/0004-6361:20031329

Using the surface photometric analysis data for a well defined sample of 79 nearby radio galaxies (z < 0.12), it is shown that the level of radio emission associated with an elliptical galaxy during the radio-loud phase is related to the presence of large amounts of isophotal twist in its optical image. In particular, radio galaxies with P_408 > 3 x 10^{25} W/Hz appear to show a preference to be associated with elliptical hosts exhibiting an isophotal twist in excess of ~20 degrees.

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