SDSS-IV MaNGA : spatial resolved properties of kinematically misaligned
  galaxies
  We select 456 galaxies with kinematically misaligned gas and stellar
components from 9546 parent galaxies in MaNGA, and classify them into 72
star-forming galaxies, 142 green-valley galaxies and 242 quiescent galaxies.
Comparing the spatial resolved properties of the misaligned galaxies with
control samples closely match in the D$_n$4000 and stellar velocity dispersion,
we find that: (1) the misaligned galaxies have lower values in $V_{\rm
gas}/{\sigma}_{\rm gas}$ and $V_{\rm star}/{\sigma}_{\rm star}$ (the ratio
between ordered to random motion of gas and stellar components) across the
entire galaxies than their control samples; (2) the star-forming and
green-valley misaligned galaxies have enhanced central concentrated star
formation than their control galaxies. The difference in stellar population
between quiescent misaligned galaxies and control samples is small; (3)
gas-phase metallicity of the green valley and quiescent misaligned galaxies are
lower than the control samples. For the star forming misaligned galaxies, the
difference in metallicity between the misaligned galaxies and their control
samples strongly depends on how we select the control samples. All these
observational results suggest external gas accretion influences the evolution
of star forming and green valley galaxies, not only in kinematics/morphologies,
but also in stellar populations. However, the quiescent misaligned galaxies
have survived from different formation mechanisms.
