Viscous Evolution of Self-Gravitating Galactic Disks Under Modified Newtonian Dynamics

Details Viscous Evolution of Self-Gravitating Galactic Disks Under Modified Newtonian Dynamics Viscous Evolution of Self-Gravitating Galactic Disks Under Modified Newtonian Dynamics

Apr 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994mnras.267..766m&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 267, NO. 3/APR1, P. 766, 1994

Astronomy and Astrophysics

Astronomy

3

Scientific paper

We discuss the viscous and star-forming evolution of self-gravitating galactic discs under modified Newtonian dynamics (MOND) proposed by Milgrom. In contrast to Newtonian dynamics, no dark matter is necessary for the rotation curve to be flat at a large distance from the centre. Assuming that the time-scale of star formation is comparable to the viscous time-scale, we obtain, when most gas is converted to stars, an exponential-like distribution of stars and a nearly flat rotation curve, which are in agreement with observed properties of spiral galaxies. The results are similar to previous results obtained under Newtonian dynamics with a dark halo.

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