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We compare the radial profiles of the specific star formation rate (sSFR) ina sample of 169 star-forming galaxies in close pairs with those of mass-matchedcontrol galaxies in the SDSS-IV MaNGA survey. We find that the sSFR iscentrally enhanced (within one effective radius) in interacting galaxies by~0.3 dex and that there is a weak sSFR suppression in the outskirts of thegalaxies of ~0.1 dex. We stack the differences profiles for galaxies in fivestellar mass bins between log(M/Mstar) = 9.0-11.5 and find that the sSFRenhancement has no dependence on the stellar mass. The same result is obtainedwhen the comparison galaxies are matched to each paired galaxy in both stellarmass and redshift. In addition, we find that that the sSFR enhancement iselevated in pairs with nearly equal masses and closer projected separations, inagreement with previous work based on single-fiber spectroscopy. We also findthat the sSFR offsets in the outskirts of the paired galaxies are dependent onwhether the galaxy is the more massive or less massive companion in the pair.The more massive companion experiences zero to a positive sSFR enhancementwhile the less massive companion experiences sSFR suppression in theiroutskirts. Our results illustrate the complex tidal effects on star formationin closely paired galaxies.

SDSS-IV MaNGA: The Radial Profile of Enhanced Star Formation in Close Galaxy Pairs