Monitoring AGNs with H\beta\ Asymmetry. II. Reverberation Mapping of
  Three Seyfert Galaxies Historically Displaying H\beta\ Profiles with Changing
  Asymmetry: Mrk 79, NGC 3227, and Mrk 841
  We report the results of reverberation mapping three bright Seyfert galaxies,
Mrk 79, NGC 3227, and Mrk 841, from a campaign conducted from December 2016 to
May 2017 with the Wyoming Infrared Observatory (WIRO) 2.3-meter telescope. All
three of these targets have shown asymmetric broad H$\beta$ emission lines in
the past, although their emission lines were relatively symmetric during our
observations. We measured H\beta\ time lags for all three targets and estimated
masses of their black holes -- for the first time in the case of Mrk 841. For
Mrk 79 and NGC 3227, the data are of sufficient quality to resolve distinct
time lags as a function of velocity and to compute two-dimensional
velocity-delay maps. Mrk 79 shows smaller time lags for high-velocity gas but
the distribution is not symmetric, and its complex velocity-delay map could
result from the combination of both inflowing and outflowing H\beta\ emitting
disks that may be part of a single larger structure. NGC 3227 shows the largest
time lags for blueshifted gas and the two-dimensional velocity-delay map
suggests a disk with some inflow. We compare our results with previous work and
find evidence for different time lags despite similar luminosities, as well as
evolving broad line region structures.
