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.

arXiv commentMinor revisions in response to referee. Revised title. Accepted in MNRAS

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Cited by in corpus (18)

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• From galactic bars to the Hubble tension: weighing up the astrophysical evidence for Milgromian gravity
• MOND simulation suggests the origin of some peculiarities in the Local Group
• Testing the MOND Paradigm of Modified Dynamics with Galaxy-Galaxy Gravitational Lensing
• The Universal Faber-Jackson Relation
• Testing MOND Over a Wide Acceleration Range in X-Ray Ellipticals
• The MOND Fundamental Plane
• The central dark matter content of early-type galaxies: scaling relations and connections with star formation histories
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• Mass of Galactic Lenses in Modified Newtonian Dynamics
• Mond - a review
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• Origin of the fundamental plane of elliptical galaxies in the Coma Cluster without fine-tuning
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• Hubble Constant, Lensing, and Time Delay in Relativistic MOND
• 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