Errata

This is a collection of errata for the print version of the book “Dynamics and Astrophysics of Galaxies” (Princeton University Press 2026). Typos and other mistakes in the web version are corrected when identified. If you find other typos or other mistakes, please report them at the Issue Tracker on GitHub.

Chapter 4

• Exercise 3(a): The definition of \(s\) should be \(s = -GM / (b\Phi)\) (found by Carlos Vera-Ciro).

• Exercise 3(b): Equation (4.89) should be

  \begin{equation*} 2E\,s^2 - 2\left(2E-{GM\over b}\right)\,s-{4GM \over b}-{L^2 \over b^2}=0\,. \end{equation*}

  (Found by Carlos Vera-Ciro).