Pressure-supported systems modeled under Modified Newtonian dynamics (MOND)ian extended gravity are expected to show an outer flattening in their velocity dispersion profiles. A characteristic scaling between the amplitude of the asymptotic velocity dispersion and the radius at which the flattening occurs is also expected. By comprehensively analyzing the dynamical behavior of ~300 extremely low-rotating elliptical galaxies from the Mapping Nearby Galaxies at APO (MaNGA) survey, we show this type of pressure-supported system to be consistent with MONDian expectations, for a range of central velocity dispersion values of 60 km s^-1^<{sigma}central<280km/s and asymptotic velocity dispersion values of 28km/s<{sigma}\infty<250km/s. We find that a universal velocity dispersion profile accurately describes the studied systems; the predicted kinematics of extended gravity are verified for all well-observed galaxies.

Cone search capability for table J/ApJ/863/107/table1 (Fitted parameters with respective errors, rotation velocity to velocity dispersion ratio measured at half-light radius, and stellar masses estimated from Sanchez+ (2018RMxAA..54..217S) for our 292 ellipticals)