Outflows in the Narrow Line Region of Bright Seyfert Galaxies - I:
  GMOS-IFU Data
  We present two-dimensional maps of emission-line fluxes and kinematics, as
well as of the stellar kinematics of the central few kpc of five bright nearby
Seyfert galaxies -- Mrk\,6, Mrk\,79, Mrk\,348, Mrk\,607 and Mrk\,1058 --
obtained from observations with the Gemini Multi-Object Spectrograph (GMOS)
Integral Field Unit (IFU) on the Gemini North Telescope. The data cover the
inner 3\farcs5$\times$5\farcs0 -- corresponding to physical scales in the range
0.6$\times$0.9 to 1.5$\times$2.2\,kpc$^2$ -- at a spatial resolution ranging
from 110 to 280 pc with a spectral coverage of 4300 -- 7100\,\AA\ and velocity
resolution of $\approx$ 90\,km\,s$^{-1}$. The gas excitation is Seyfert like
everywhere but show excitation, but show excitation gradients that are
correlated with the gas kinematics, reddening and/or the gas density. The gas
kinematics show in all cases two components: a rotation one similar to that
observed in the stellar velocity field, and an outflow component. In the case
of Mrk607, the gas is counter-rotating relative to the stars. Enhanced gas
velocity dispersion is observed in association to the outflows according to two
patterns: at the locations of the highest outflow velocities along the
ionization axis or perpendicularly to it in a strip centered at the nucleus
that we attribute to an equatorial outflow. Bipolar outflows are observed in
Mrk\,348 and Mrk\,79, while in Mrk\,1058 only the blueshifted part is clearly
observed, while in the cases of Mrk\,6 and Mrk\,607 the geometry of the outflow
needs further constraints from modeling to be presented in a forthcoming study,
where the mass flow rate and powers will also be obtained.
