Simple and accurate modelling of the gravitational potential produced by thick and thin exponential disks

Understand

We present accurate models of the gravitational potential produced by a radially exponential disk mass distribution.

• The models are produced by combining three separate Miyamoto-Nagai disks.
• Such models have been used previously to model the disk of the Milky Way, but here we extend this framework to allow its application to disks of any mass, scalelength, and a wide range of thickness from infinitely thin to near spherical (ellipticities from 0 to 0.9).
• The models have the advantage of simplicity of implementation, and we expect faster run speeds over a double exponential disk treatment.