Gas dynamics in the Milky Way: second pattern speed and large-scale morphology
Gas dynamics in the Milky Way: second pattern speed and large-scale morphology
We present new gas flow models for the Milky Way inside the solar circle.We use smoothed particles hydrodynamics (SPH) simulations in gravitational potentials determined from the near-infrared (NIR) luminosity distribution of the bulge and disc, assuming a constant NIR mass-to-light ratio, with an outer halo added in some cases.The luminosity …