The velocity distribution of Sloan Digital Sky Survey satellites in Modified Newtonian Dynamics

G. W. Angus, B. Famaey, O. Tiret, F. Combes, H. S. Zhao

Research output: Contribution to journalLetter

21 Citations (Scopus)


The recent Sloan Digital Sky Survey measured velocity distribution of satellite galaxies has been modelled in the context of Modified Newtonian Dynamics (MOND). We show that even when the extra constraint of adhering to the projected satellite number density profile is added, the two line-of-sight (los) velocity dispersion profiles presented in Klypin & Prada can be matched simply with a radially varying anisotropy. Interestingly, the anisotropics required to fit the los velocity dispersions are remarkably similar to the anisotropics generated by dissipationless collapse simulations in MOND. The mass-to-light ratios of the two host galaxies used are sensible, and positivity of the distribution function is satisfied.

Original languageEnglish
JournalMonthly Notices of the Royal Astronomical Society: Letters
Issue number1
Publication statusPublished - Jan 2008


All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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