On the use of galaxy rotation curves to test the modified dynamics

Details On the use of galaxy rotation curves to test the modified dynamics On the use of galaxy rotation curves to test the modified dynamics

Oct 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...333..689m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 333, Oct. 15, 1988, p. 689-693. Research supported by the Minerva Gesellsch

Astronomy and Astrophysics

Astrophysics

39

Dark Matter, Dynamic Characteristics, Galactic Rotation, H I Regions, Mass To Light Ratios, Stellar Mass, Angular Velocity, Galactic Nuclei, Mass Distribution

Scientific paper

The predictions of modified Newtonian dynamics (MOND) on galaxy rotation curves are discussed with respect to the results of Kent (1987). Particular attention is given to the important role played by low-surface-density galaxies in assessing the modified dynamics. It is suggested that several difficulties encountered in the Kent study (the spread of values obtained for the acceleration constant and the behavior of some rotation curves at large radii) may be attributed to the omission of the observed H I mass from the mass models employed. It is noted that the gas contributes substantially in some cases and is distributed differently from the light.

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