http://arxiv.org/abs/1805.01545
We determine the physical conditions and location of the outflow material seen in the mini-BAL quasar SDSS J1111+1437 (z = 2.138). These results are based on the analysis of a high S/N, medium-resolution VLT/X- shooter spectrum. The main outflow component spans the velocity range -1500 to -3000 km s$^{-1}$ and has detected absorption troughs from both high-ionization species: C IV , N V , O VI , Si IV , P V , and S IV ; and low-ionization species: H I , C II , Mg II , Al II , Al III , Si II , and Si III . Measurements of these troughs allow us to derive an accurate photoionization solution for this absorption component: a hydrogen column density, log ( N H ) = 21.47 $^{+0.21}{-0.27}$ cm$^{-2}$ and ionization parameter, log (U_H) = -1.23$^{+0.20}{-0.25}$. Troughs produced from the ground and excited states of S IV combined with the derived U_H value allow us to determine an electron number density of log (n_e) = 3.62$^{+0.09}{-0.11}$ cm$^{-3}$ and to obtain the distance of the ionized gas from the central source: R = 880$^{+220}{-260}$ pc.
X. Xu, N. Arav, T. Miller, et. al.
Mon, 7 May 18
1/39
Comments: 9 pages, 6 figures, 2 tables. Published, 2018, ApJ, 858, 39
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