Exponential galactic disk
= Exponential galactic disk
A thin exponential galactic disk has surface density $\Sigma(R)=\Sigma_0e^{-R/R_d}$ and total mass $2\pi\Sigma_0R_d^2$.
= Exponential galactic disk
A thin exponential galactic disk has surface density $\Sigma(R)=\Sigma_0e^{-R/R_d}$ and total mass $2\pi\Sigma_0R_d^2$.