Abstract
It is shown that gas clouds in a biconical shape may produce profiles similar to those produced in a spherical geometry. The profile shape depends on the radial velocity field, the projection angle, and most importantly, the shell luminosity distribution. If the conical region extends over a large range of radial distances, the resultant profile may be symmetrical with logarithmic wings. It is shown that the double-peaked H-beta profile in Akn 120 can be modeled with a double-stream model. 26 refs.
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