Comparison of The UV and Optical Fe II Emission in Type 1 AGNs.

We present the kinematical properties of the UV and optical \FeII\ emission gas based on the velocity shift and line width measurements of a sample of 223 Type 1 active galactic nuclei (AGNs) at 0.4 $ 3200 \kms; Group B). \FeII\ emission lines are on average narrower than \Hb\ and \MgII\ for Group A, indicating the \FeII\ emission region is further out in the BLR, while for Group B AGNs \FeOPT\ is comparable to \Hb\ and broader than \MgII. While \FeII\ emission lines are on average redshifted ($40\pm141$ \kms\ and $182\pm95$, respectively for \FeUV\ and \FeOPT), indicating inflow, the sample as a whole shows a large range of velocity shifts, suggesting complex nature of gas kinematics.