Search

The energetic feedback generated by the radiation pressure of the accretion disk or the radio jets in active galactic nuclei (AGNs) has been suggested to be able to produce fast ionized outflows, which can be studied using highly ionized emission lines. Radiation pressure from the accretion disk is thought to be the dominant driving mechanism in radio quiet AGN. However, detection of HI absorbing gas in outflow in Low Excitation Radio Galaxies (LERGs) as well as a correlation between [OIII] line width and radio power suggest that the radio jet in radio loud AGN may be capable of driving an outflow. We obtained SDSS spectroscopic data for 18 optically selected LERGs at 0.01< z

The broad line wings in the optical [OIII] 5007 emission line are one of the best signatures of fast ionized gas outflows on host galaxy scales in AGN. While large spectroscopic surveys like SDSS have characterized the kinematics of [OIII] for large samples of AGN in detail, they cannot determine the location and energetics of those outflows. As part of the Close AGN Reference Survey (CARS) we obtained spatially-resolved IFU spectroscopy for a representative sample of 40 luminous type 1 AGN at 0.0195% of the flux associated with a point-like source. Strickingly, we measure small offsets in their spatial location on the order of 100 parsecs from the AGN nucleus using the spectroastrometry technique. Our findings confirm that most of the ionized gas outflows are rather compact and not (yet) reaching significantly into their host galaxy which is in agreement with HST or recent AO observations, but strongly disagrees with several previous IFU studies. Such systematic analyses provided by CARS are therefore the key to establishing a picture of AGN-driven outflows in the local Universe and provide a benchmark for comparison with higher redshift observations of even more powerful AGN.

The broad line wings in the optical [OIII] 5007 emission line are one of the best signatures of fast ionized gas outflows on host galaxy scales in AGN. While large spectroscopic surveys like SDSS have characterized the kinematics of [OIII] for large samples of AGN in detail, they cannot determine the location and energetics of those outflows. As part of the Close AGN Reference Survey (CARS) we obtained spatially-resolved IFU spectroscopy for a representative sample of 40 luminous type 1 AGN at 0.0195% of the flux associated with a point-like source. Strickingly, we measure small offsets in their spatial location on the order of 100 parsecs from the AGN nucleus using the spectroastrometry technique. Our findings confirm that most of the ionized gas outflows are rather compact and not (yet) reaching significantly into their host galaxy which is in agreement with HST or recent AO observations, but strongly disagrees with several previous IFU studies. Such systematic analyses provided by CARS are therefore the key to establishing a picture of AGN-driven outflows in the local Universe and provide a benchmark for comparison with higher redshift observations of even more powerful AGN.