The dynamics of three nearby E0 galaxies in refracted gravity

We tested whether refracted gravity, a theory of modified gravity that describes the dynamics galaxies without aid dark matter, can model three massive elliptical galaxies, NGC 1407, 4486, and 5846, out to ∼10 R e , where baryonic mass component fades matter is required in Newtonian gravity. probed these outer regions with kinematics globular clusters provided by SLUGGS survey. Refracted mimics gravitational permittivity, monotonic function local density depending on parameters, ϵ 0 ρ c Q which are expected be universal. satisfactorily reproduces velocity dispersion profiles stars red blue clusters, stellar mass-to-light ratios agreement population synthesis models, orbital anisotropy parameters consistent previous results obtained matter. The sets permittivity found for each galaxy other within ∼2 σ . compare mean { ,log 10 ( [g cm −3 ])} = {0.089 −0.035 +0.038 0.47 −0.21 +0.29 −24.25 −0.20 +0.28 } here means rotation curves vertical 30 disk from DiskMass Survey (DMS): agree 1 DMS values, whereas agrees 3 This suggests ellipticals allow common values supports universality function.