| Abstract : | Most early-type galaxies have a low star-formation rate (SFR) and slow kinematics while late-type galaxies are fast rotators with a high rate of star formation. In this work, we identify and study extreme outliers in the space of SFR and kinematics. We use galaxies from the SDSS-MaNGA DR17 and plot them on an SFR-Stellar mass plot, further binning them into small grids. Considering > 3−𝜎 outliers above and below the local mean 𝜆𝑅𝑒 in each bin, we identify a rare population of 43 slow rotator star-forming galaxies. Our outliers are dominated by S0 galaxies but have representatives from other galactic morphological types as well. We then study the global properties of these galaxies - SFR, bulge-to-total luminosity ratio, anisotropy, size-mass relation, environment and metallicity. We find that all our sample galaxies are star-forming, lying along the star-forming main sequence. The S0s with high SFR and misaligned stellar and gas rotation are indicative of minor mergers. The ETGs display dispersion-dominated kinematics as expected based on their morphology, but the high-mass galaxies are found to be in dense environments, which makes their high SFR unexpected. We also find four spiral galaxies with slow rotation in isolated environments. We discuss these outliers in the context of our present understanding of galaxy formation and evolution.
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