4 research outputs found
Radio emission and the optical isophotal twist of radio-loud ellipticals
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.Comment: 3 pages, 2 figures, in press in Astronomy and Astrophysic