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Q 1222+228
V = 15.5; z = 2.040; exp = 3600 s; coverage = 3810.5-6304.9 A
Spectra of this QSO, also known as TON 1530, were previously studied by YSB, SBS, and SS92. Several strong C IV systems at z = 1.4867, 1.5239, 1.9372, 1.9805, and 2.0555 were reported by YSB and SBS. These systems have been observed in the HIRES spectrum and have been reported elsewhere (Ganguly et al. 1999). SS92 tentatively reported the possible discovery of Mg II doublets at z = 1.4867 and 1.5239 associated with the C IV reported by YSB and SBS. The HIRES spectrum does not cover the expected wavelengths of these Mg II transitions. However, a search was made for associated Fe II transitions for both redshifts. The expected wavelengths of the 2587 and 2600 transitions were not covered by the HIRES format, but the expected regions of the 2383 transition were. No Fe II 2383 was detected for either redshift to a 5-sigma EW(rest) of ~0.01 A. Only the z = 0.6681 Mg II system is included in this work.
z=0.668052 |DATA & VOIGT PROFILES| |EWs & AOD COLUMNS| |VP PARAMETERS|
This system was tentatively reported by YSB, and later confirmed by SBS. The profile is characterized by a central strong absorption and what classifies as a "high velocity" cloud at v ~230 km/s. Velocities less than -100 km/s were not observed for the Mg II 2796 transitions, but were for the 2803 transition. There is no detectable absorption at those velocities. A total of five VP components were fit to the central absorption profile and a single component was fit to the high velocity subsystem. The Fe II 2374 transition and the Mn II triplet showed no absorption to the EW(rest) limits given in Table 3.32. The Ca II 3934, 3969 doublet was not covered by the HIRES format.
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