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arXiv · astro-ph/0511280

[OIII] profile substructure in radio-quiet quasars

Christian Leipski·Nicola Bennert
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Abstract

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 Hbeta-[OIII]5007 wavelength range. In all cases, there is evidence for [OIII] profile substructure (shoulders, subpeaks, blueshifted ''broad'' components) with different clarity. To measure the velocity, line width, intensity, and location of these [OIII] 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.

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Christian Leipski, Nicola Bennert. 2005-11-09. [OIII] profile substructure in radio-quiet quasars. https://doi.org/10.1051/0004-6361%3A20054459

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