[
] profile substructure in radio–quiet
quasars
Astronomisches Institut Ruhr–Universität Bochum, Universitätsstrasse 150, 44780 Bochum, Germany e-mail: [leipski;nbennert]@astro.rub.de
Received:
27
July
2005
Accepted:
4
November
2005
Interactions between the radio jet and the optical emission of
the narrow-line region (NLR) are a well known phenomenon in Seyfert
galaxies. Here, we present the study of possible jet-NLR
interactions in five radio-quiet PG quasars with double or
triple radio structure.
High spatial and spectral resolution observations were carried out in the
Hβ-[] λ5007 wavelength range.
In all cases, there is evidence for
[] profile substructure (shoulders, subpeaks, blueshifted
“broad” components) with different clarity. To measure the
velocity, line width, intensity, and
location of these [] components, several Gaussians were fitted.
Often, the substructures are more pronounced close
to the radio lobes, suggestive of jet-NLR interactions.
Our observations support the
unification scheme in which radio-quiet quasars are assumed to be
the luminous cousins of Seyfert galaxies.
Key words: galaxies: active / galaxies: quasars: emission lines / galaxies: jets
© ESO, 2006