Reverberation Mapping of Optical Emission Lines in Five Active Galaxies
  We present the first results from an optical reverberation mapping campaign
executed in 2014, targeting the active galactic nuclei (AGN) MCG+08-11-011, NGC
2617, NGC 4051, 3C 382, and Mrk 374. Our targets have diverse and interesting
observational properties, including a "changing look" AGN and a broad-line
radio galaxy. Based on continuum-H$\beta$ lags, we measure black hole masses
for all five targets. We also obtain H$\gamma$ and He{\sc ii}\,$\lambda 4686$
lags for all objects except 3C 382. The He{\sc ii}\,$\lambda 4686$ lags
indicate radial stratification of the BLR, and the masses derived from
different emission lines are in general agreement. The relative responsivities
of these lines are also in qualitative agreement with photoionization models.
These spectra have extremely high signal-to-noise ratios (100--300 per pixel)
and there are excellent prospects for obtaining velocity-resolved reverberation
signatures.
