Empirical velocity profiles for galactic rotation curves

11 Dec 2017  ·  Fune E. Lopez ·

A unified parametrization of the circular velocity, which accurately fits 850 galaxy rotation curves without needing in advance the knowledge of the luminous matter components, nor a fixed dark matter halo model, is proposed. A notable feature is that the associated gravitational potential increases with the distance from the galaxy center, giving rise to a length scale indicating a finite size of a galaxy, and after, the Keplerian fall-off of the parametrized circular velocity is recovered according to Newtonian gravity, making possible the estimation of the total mass enclosed by the galaxy...

PDF Abstract
No code implementations yet. Submit your code now

Categories


Astrophysics of Galaxies