New paper on the arxiv today with T. Haines, @elenadonghia , @cfl2126 & Lars Hernquist: we showed how the disequilibrium of a vertically perturbed disk affects our determination of the disk surface density with Jeans modelling arxiv.org/abs/1903.00607 Taking the 1st order moments of the collisionless Boltzmann eq leads to the Jeans eqs. Using the Jeans equation for vertical velocities of stars accross the Galactic disk in combination with the Poisson eq allows to determine the disk surface density as a function of height: nice