Physical Conditions in Quasar Outflows: Vlt Observations of Qso 2359–1241
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چکیده
We analyze the physical conditions of the outflow seen in QSO 2359–1241 (NVSS J235953-124148), based on high resolution spectroscopic VLT observations. This object was previously studied using Keck/HIRES data. The main improvement over the HIRES results is our ability to accurately determine the number density of the outflow. For the major absorption component, level population from five different Fe II excited level yields nH = 10 4.4 cm with less than 20% scatter. We find that the Fe II absorption arises from a region with Based on observations made with ESO Telescopes at the Paranal Observatories under programme ID 078.B-0433(A) previously at Department of Astronomy, University of Colorado, Boulder, CO
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تاریخ انتشار 2008