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Paper: Dramatically Variable C IV Mini-Broad Absorption Line System in the Quasar HS 1603+3820
Volume: 399, Panoramic Views of Galaxy Formation and Evolution
Page: 423
Authors: Misawa, T.; Eracleous, M.; Charlton, J.C.; Chartas, G.; Kashikawa, N.
Abstract: We observed the quasar HS 1603+3820 (zem = 2.542, first discovered by Dobrzycki et al. 1996) six times over an interval of 4.2 yrs (1.2 yrs in the quasar rest frame) using the High Dispersion Spectrograph on Subaru telescope. The purpose was to study the mini-broad absorption line (mini-BAL; FWHM ∼ 1,000 km s−1) that is blue-shifted from the quasar by ∼ 9,500 km s−1. We found significant time variability, which supported the physical association of the mini-BAL gas with an outflow from the quasar. We have narrowed down the cause of the variability to two possible scenarios. We also used archival Chandra x-ray data to study the x-ray properties of this quasar. The results constrain the location of the absorbing gas relative to the overall outflow.
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