Spatially Resolved Spectroscopy of Emission-Line Gas in QSO Host Galaxies
We present off-nuclear spectra of 3 radio loud QSO’s, 3C249. 1, 3C273 and 3C323. 1, taken with the echellette spectrograph and imager (ESI) at Keck observatory. From these spectra we have extracted the spatial profile along the slit of the [OIII]λ5007Åline. Fitted Gaussian distributions to each of these profiles show emission-line gas out to several tens of kiloparsecs from the galaxy nucleus. Most observations show several gas components at distinct velocities and velocity dispersions, much of which is above the escape velocity for any resonable mass galaxy. In addition, we show slitless spectroscopy images for one other object, 3C48. From the slitless spectroscopy images we can extract 2-dimensional spatial as well as velocity information on the emission line gas.
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