NGC 2419 does not challenge MOND

Details NGC 2419 does not challenge MOND NGC 2419 does not challenge MOND

2011-07-25

arxiv.org/abs/1107.4953v2

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

3 pages, 2 figrues, minor revisions, programming error corrected, accepted MNRAS

Scientific paper

I show that, in the context of MOND, non-isothermal models, approximated by high order polytropic spheres, are consistent with the observations of the radial distribution of the line-of-sight velocity dispersion in the distant globular cluster, NGC 2419. This calls into question the claim by Ibata et al. that the object constitutes a severe challenge for MOND. In general, the existence and properties of globular clusters are more problematic for LCDM than for MOND.

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