M51
High-resolution gas surface density map of M51 from the HST extinction method from Faustino Vieira et al. 2023 (pink), overlayed on the HST v-band (blue), and Halpha (yellow).
Image Credit: Helena Faustino Vieira (CHART, Cardiff University), NASA, ESA.
Milky Way-like simulation: time evolution
Milky Way-like numerical model time evolution from Durán-Camacho et al. 2025. Top row shows, from left to right, the surface density and the radial and tangential velocity residuals. The bottom row, from left to right, shows the volume density, fraction of dense mass above critical density of 700 cm^{-3}, and the divergence of the model.
Image Credit: Eva Durán Camacho (IAC).