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We present the analysis of the light curves of 9 high-magnificationsingle-lens gravitational microlensing events with lenses passing over sourcestars, including OGLE-2004-BLG-254, MOA-2007-BLG-176,MOA-2007-BLG-233/OGLE-2007-BLG-302, MOA-2009-BLG-174, MOA-2010-BLG-436,MOA-2011-BLG-093, MOA-2011-BLG-274, OGLE-2011-BLG-0990/MOA-2011-BLG-300, andOGLE-2011-BLG-1101/MOA-2011-BLG-325. For all events, we measure the linearlimb-darkening coefficients of the surface brightness profile of source starsby measuring the deviation of the light curves near the peak affected by thefinite-source effect. For 7 events, we measure the Einstein radii and thelens-source relative proper motions. Among them, 5 events are found to haveEinstein radii less than 0.2 mas, making the lenses candidates of very low-massstars or brown dwarfs. For MOA-2011-BLG-274, especially, the small Einsteinradius of $\theta_{\rm E}\sim 0.08$ mas combined with the short time scale of$t_{\rm E}\sim 2.7$ days suggests the possibility that the lens is afree-floating planet. For MOA-2009-BLG-174, we measure the lens parallax andthus uniquely determine the physical parameters of the lens. We also find thatthe measured lens mass of $\sim 0.84\ M_\odot$ is consistent with that of astar blended with the source, suggesting that the blend is likely to be thelens. Although we find planetary signals for none of events, we provideexclusion diagrams showing the confidence levels excluding the existence of aplanet as a function of the separation and mass ratio.

Characterizing Lenses and Lensed Stars of High-Magnification Single-lens Gravitational Microlensing Events With Lenses Passing Over Source Stars