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We study the properties of 66 galaxies with kinematically misaligned gas andstars from MaNGA survey. The fraction of kinematically misaligned galaxiesvaries with galaxy physical parameters, i.e. M*, SFR and sSFR. According totheir sSFR, we further classify these 66 galaxies into three categories, 10star-forming, 26 "Green Valley" and 30 quiescent ones. The properties ofdifferent types of kinematically misaligned galaxies are different in that thestar-forming ones have positive gradient in D4000 and higher gas-phasemetallicity, while the green valley/quiescent ones have negative D4000gradients and lower gas-phase metallicity on average. There is evidence thatall types of the kinematically misaligned galaxies tend to live in moreisolated environment. Based on all these observational results, we propose ascenario for the formation of star forming galaxies with kinematicallymisaligned gas and stars - the progenitor accretes misaligned gas from agas-rich dwarf or cosmic web, the cancellation of angular momentum from gas-gascollisions between the pre-existing gas and the accreted gas largelyaccelerates gas inflow, leading to fast centrally-concentrated star-formation.The higher metallicity is due to enrichment from this star formation. For thekinematically misaligned green valley and quiescent galaxies, they might beformed through gas-poor progenitors accreting kinematically misaligned gas fromsatellites which are smaller in mass.

SDSS-IV MaNGA: Properties of galaxies with kinematically decoupled stellar and gaseous components