MOND and the lensing Fundamental Plane: No need for dark matter on galaxy scales

Abstract

Bolton et al. (2007) have derived a mass-based fundamental plane using photometric and spectroscopic observations of 36 strong gravitational lenses. The lensing allows a direct determination of the mass-surface density and so avoids the usual dependence on mass-to-light ratio. We consider this same sample in the context of modified Newtonian dynamics (MOND) and demonstrate that the observed mass-based fundamental plane coincides with the MOND fundamental plane determined previously for a set of high-order polytropic spheres chosen to match the observed range of effective radii and velocity dispersions in elliptical galaxies. Moreover, the observed projected mass within one-half an effective radius is consistent with the mass in visible stars plus a small additional component of ``phantom dark matter'' resulting from the MOND contribution to photon deflection.

Minor revisions in response to referee. Revised title. Accepted in MNRAS

References in corpus (4)

• A More Fundamental Plane
• Rings and shells of "dark matter" as MOND artifacts
• Forming Galaxies with MOND
• The necessity of dark matter in MOND within galactic scales

Cited by in corpus (6)

• From galactic bars to the Hubble tension: weighing up the astrophysical evidence for Milgromian gravity
• Testing MOND Over a Wide Acceleration Range in X-Ray Ellipticals
• Mass of Galactic Lenses in Modified Newtonian Dynamics
• Mond - a review
• Galaxy Bulges As Tests of CDM vs MOND in Strong Gravity
• Peculiar dark matter halos inferred from gravitational lensing as a manifestation of modified gravity