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Paper: QSO Absorption from Interacting Galaxies
Volume: 423, Galaxy Wars: Star Formation and Stellar Populations in Interacting Galaxies
Page: 69
Authors: Keeney, B. A.; Stocke, J. T.; Carilli, C.
Abstract: We present broadband HST / WFPC2 images, ground-based Hα images, and VLA H I 21 cm emission maps of the nearby galaxy ESO 1327–2041, which is located 38″ west of the quasar PKS 1327–206. We find H I 21 cm absorption in the quasar spectrum at czabs = 5250 and 5500 km s-1, the same velocities that metal lines of Na I and Ca II were previously discovered. We attribute this absorption to disk gas from a disrupted spiral arm revealed by our HST images. Our optical spectra show Hα emission from several clumps of material along this disrupted spiral arm that are located ∼5″ from the quasar position ( ∼ 2 h70-1 kpc in projection ). As shown clearly in our HST images, ESO 1327–2041 appears to be the result of a recent merger that ejected a galaxy nucleus from the system. Our ground-based Hα images reveal the presence of several H II regions in an inclined disk near the galaxy's center, which likely represent star formation triggered by the merger.
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