The C IV absorption-Mg II kinematics connection in < z > similar to 0.7 galaxies

We have examined Faint Object Spectrograph data from the Hubble Space Teles cope archive for C IV lambda lambda 1548, 1550 absorption associated with 4 0 Mg II lambda lambda 2796, 2803 absorption-selected galaxies at 0.4 less t han or equal to z less than or equal to 1.4. We report a strong correlation between Mg II kinematics, measured in similar to 6 km s(-1) resolution HIR ES/Keck spectra, and W-r(1548); this implies a physical connection between the processes that produce "outlying velocity" Mg II clouds and high-ioniza tion galactic/halo gas. We found no trend in ionization condition W-r(1548) /W-r(2796) with galaxy-QSO line-of-sight separation for 13 systems with con firmed associated galaxies, suggesting no obvious ionization gradient with galactocentric distance in these intermediate-redshift galaxies. We find te ntative evidence (2 sigma) that W-r(1548)/W-r(2796) is anticorrelated with galaxy B-K color; if further data corroborate this trend, in view of the st rong C IV-Mg II kinematics correlation, it could imply a connection between stellar populations, star formation episodes, and the kinematics and ioniz ation conditions of halo gas at z similar to 1.