The Rotation Curves of the Polar Ring Galaxy NGC 4650A under Modified Newtonian Dynamics

Details The Rotation Curves of the Polar Ring Galaxy NGC 4650A under Modified Newtonian Dynamics The Rotation Curves of the Polar Ring Galaxy NGC 4650A under Modified Newtonian Dynamics

Sep 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...450...70m&link_type=abstract

Astrophysical Journal v.450, p.70

Astronomy and Astrophysics

Astronomy

6

Galaxies: Individual Ngc Number: Ngc 4650A, Galaxies: Kinematics And Dynamics, Galaxies: Structure, Gravitation

Scientific paper

We have applied modified Newtonian dynamics (MOND) proposed by Milgrom to the polar ring galaxy NGC 4650A. The equatorial and polar rotation curves predicted by MOND for the luminous matter in the disk and polar ring are consistent with the observational data. This is remarkable because, in contrast to the conventional dark halo hypothesis, there is no adjusting parameter in MOND, except for the mass-luminosity ratio of visual components. More accurate kinematic data for the stellar disk of NGC 4650A is necessary to stringently test MOND.

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