2018ApJ...863..107D

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 < σ_central < 280 km s^–1 and asymptotic velocity dispersion values of 28kms^–1< σ_∞< 250kms^–1. 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.