The Attraction of Dwarfs

Details The Attraction of Dwarfs The Attraction of Dwarfs

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21924414m&link_type=abstract

American Astronomical Society, AAS Meeting #219, #244.14

Astronomy and Astrophysics

Astronomy

Scientific paper

Recent near-infrared observations of star-forming dwarf galaxies whose gas motions are predominantly disordered are employed to confront theoretical predictions for the relationship between baryonic mass and kinematics. The baryonic Tully-Fisher relation for the dwarfs has a slope which is half that predicted by Modified Newtonian Dynamics (MOND), but which agrees exactly with that predicted by Modified Gravity (MOG). MOG also correctly predicts an upturn in slope for heavier galaxies around the mass where it is observed, but the rate of change of slope is not rapid enough to yield as good a fit to rotators as MOND. Standard cosmology fails to fit any of the data.

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