Disk galaxies evolve over time through processes that may rearrange both the radial mass
profile and the metallicity distribution within the disk. This review of such slow changes is …

About one fifth of all spiral disk galaxies include a ring-shaped pattern in the light
distribution, and an additional one third appear to have broken or partial rings made up of …

For the full or isenthalpic Euler equations combined with the ideal-gas law, the flux-vector
splitting presented here is, by a great margin, the simplest means to implement upwind …

I study the flow of gas in and around the bars or ovals of model barred galaxies and show
that it is intimately linked to the properties of the periodic orbits. Simulations show that the …

We present rest-frame optical data of the submillimetre galaxy GN20 obtained with the JWST
Near Infrared Spectrograph (NIRSpec) in integral field spectroscopy mode. The H emission …

Blue and near-infrared surface photometry of 15 barred spiral galaxies, combined with
results from photometric and kinematic studies of barred galaxies, reveals that:(1) early …

Basic dynamical mechanisms that produce an amplification of the accretion rate of gas
clouds into the central regions of barred galaxies, and their subsequent effects on the …

The evolution of an ensemble of molecular clouds is studied by simulation using a
collisional model coupled with the cloud dynamics in a barred galaxy. A density wave of …

We study the evolution of the gas distribution in a globally unstable galactic disk with a
particular emphasis on the gasdynamics in the central kiloparsec and the fueling activity …

Bars in gas-rich spiral galaxies are short-lived. They drive gas inflows through their gravity
torques, and at the same time self-regulate their strength. Their robustness has been subject …