MOND and the lensing fundamental plane: no need for dark matter on galaxy scales

R. H. Sanders*, D. D. Land

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

Bolton et al. 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 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 of 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.

Original languageEnglish
Pages (from-to)701-705
Number of pages5
JournalMonthly Notices of the Royal Astronomical Society
Volume389
Issue number2
DOIs
Publication statusPublished - 11-Sep-2008

Keywords

  • gravitational lensing
  • galaxies : elliptical and lenticular, cD
  • galaxies : fundamental parameters
  • galaxies : kinematics and dynamics
  • MODIFIED NEWTONIAN DYNAMICS
  • ORDINARY ELLIPTIC GALAXIES
  • CLUSTERS
  • SPECTROSCOPY
  • PHOTOMETRY
  • DEARTH
  • LIGHT

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