Multi-phase outflows in post starburst E+A galaxies -- I. General sample
  properties and the prevalence of obscured starbursts
  E+A galaxies are believed to be a short phase connecting major merger ULIRGs
with red and dead elliptical galaxies. Their optical spectrum suggests a
massive starburst that was quenched abruptly, and their bulge-dominated
morphologies with tidal tails suggest that they are merger remnants. AGN-driven
winds are believed to be one of the processes responsible for the sudden
quenching of star formation and for the expulsion and/or destruction of the
remaining molecular gas. Little is known about AGN-driven winds in this
short-lived phase. In this paper we present the first and unique sample of post
starburst galaxy candidates with AGN that show indications of ionized outflows
in their optical emission lines. Using IRAS-FIR observations, we study the star
formation in these systems and find that many systems selected to have post
starburst signatures in their optical spectrum are in fact obscured starbursts.
Using SDSS spectroscopy, we study the stationary and outflowing ionized gas. We
also detect neutral gas outflows in 40\% of the sources with mass outflow rates
10--100 times more massive than in the ionized phase. The mean mass outflow
rate and kinetic power of the ionized outflows in our sample ($\dot{M}\sim 1\,
\mathrm{M_{\odot}/yr}$, $\dot{E}\sim 10^{41}\, \mathrm{erg/sec}$) are larger
than those derived for active galaxies of similar AGN luminosity and stellar
mass. For the neutral outflow ($\dot{M}\sim 10\, \mathrm{M_{\odot}/yr}$,
$\dot{E}\sim 10^{42}\, \mathrm{erg/sec}$), their mean is smaller than that
observed in (U)LIRGs with and without AGN.
