25 papers
Composite Bulges -- V. Detecting signatures of gas inflows in IFU data: The MUSE view of ionised gas kinematics in nearby galaxies
Tutku Kolcu, Witold Maciejewski, Peter Erwin +7
Using VLT/MUSE data, we study the ionised-gas kinematics in a mass- and volume-limited (, \,Mpc) sample of 21 nearby galaxies to identify signa…
Bar-halo interaction: the role of orbital anisotropy
Paula Gherghinescu, Francesca Fragkoudi, Alis Deason
We investigate the dynamical response of dispersion-dominated halo populations to a rotating galactic bar, focusing on how the underlying halo phase space distribution function (DF…
Coupling between stellar and HI lopsidedness in Milky Way-type galaxies from the Auriga Superstars cosmological simulations
Arianna Dolfi, Facundo A. Gómez, Rebekka Bieri +5
Lopsidedness is common in disk galaxies, yet its origin and evolution remain unclear. Previous studies typically examined stellar and gas asymmetries separately, but a combined ana…
The diverse nature of spiral arms in the Auriga Superstars cosmological hydrodynamic simulations
Robert J J Grand, Francesca Fragkoudi, Rüdiger Pakmor +4
The dynamical nature and formation mechanism(s) of galactic spiral arms remain long-standing problems in astrophysics. Most theoretical work is based on analytic calculations or id…
Dynamical disequilibrium in dwarf galaxies: rethinking gas dynamics, rotation curves, and dark matter inference
Diego Dado, Kyle A. Oman, Katherine E. Harborne +9
We quantify departures from hydrodynamical and centrifugal equilibrium in the gas discs of low-mass () galaxies from the COLIBR…
What drives bar rotation? The effect of internal properties and galaxy interactions on bar pattern speeds
Alex Merrow, Francesca Fragkoudi, Rob J. J. Grand +1
One of the main properties of galactic bars is their rotation (or pattern) speed, which is driven by both internal galactic properties, as well as external interactions. To assess…