340 citations · 3.3k across the 94 of their papers we have counts for
95 papers
Slow stellar halo rotation as a signature of disc flips and GES-like mergers
Kirill Batrakov, Alis J. Deason, Francesca Fragkoudi +3
The stellar halo of the Milky Way (MW) exhibits a weak net prograde rotational signal ( km~s), yet its origin remains unexplained. To investigate this, we u…
The GECKOS survey: Assembly history of the lenticular galaxy NGC 3957
Yuchen Ding, Marie Martig, Ling Zhu +24
We analyse the assembly history of the edge-on lenticular galaxy NGC 3957 using deep integral-field spectroscopic MUSE data from the GECKOS survey. By applying a dust-corrected Mul…
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…
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…
Stirring Things Up: Bar-induced substructures in the stellar halo of a cosmological Milky Way analogue
Thomas Tomlinson, Francesca Fragkoudi, Andreia Carrillo +8
The stellar halo of the Milky Way contains the remnants of past accretion events, which could be detectable as substructures in the classical integrals of motion space, such as ene…
A nuclear disc at Cosmic Noon: evidence of early bar-driven galaxy evolution
Zoe A. Le Conte, Dimitri A. Gadotti, Thomas Harvey +7
Recent studies have revealed that bars can form as early as a few billion years after the Big Bang, already displaying characteristics similar to those of evolved bars in the Local…
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…
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…
The evolution of the bar fraction and bar lengths in the last 12 billion years
Zoe A. Le Conte, Dimitri A. Gadotti, Leonardo Ferreira +7
We investigate the evolution of the bar fraction and length using an extended JWST NIRCam imaging dataset of galaxies at . We assess the wavelength dependence of t…
Dark gaps and resonances in barred galaxies
Taehyun Kim, Dimitri A. Gadotti, Myeong-gu Park +4
Dark gaps, low surface brightness regions along the bar minor axis, are expected to form as a consequence of secular evolution in barred galaxies. Although several studies have pro…
Chronology of our Galaxy from Gaia colour-magnitude diagram fitting (ChronoGal): IV. On the inner Milky Way stellar age distribution
Tomás Ruiz-Lara, David Mirabal, Carme Gallart +15
The Milky Way's inner region is dominated by a stellar bar and a boxy-peanut shaped bulge. However, which stellar populations inhabit the inner Galaxy or how star formation proceed…
From order to chaos: the blurred out metallicity gradient of the Gaia-Enceladus/Sausage progenitor
Andreia Carrillo, Alis J. Deason, Azadeh Fattahi +2
The powerful combination of Gaia with other Milky Way large survey data has ushered in a deeper understanding of the assembly history of our Galaxy, which is marked by the accretio…
The distribution and origin of metals in simulated Milky Way-like galaxies
Federico G. Iza, Cecilia Scannapieco, Sebastián E. Nuza +6
In this study, we investigate the distribution and origin of chemical elements in different stellar components of simulated Milky Way-like galaxies in relation to their mass assemb…
The GECKOS Survey: revealing the formation history of a barred galaxy via structural decomposition and resolved spectroscopy
A. Fraser-McKelvie, D. A. Gadotti, F. Fragkoudi +10
Disentangling the (co-)evolution of individual galaxy structural components remains a difficult task, owing to the inability to cleanly isolate light from spatially overlapping com…
Auriga Streams III: the mass-metallicity relation does not rule out tidal mass loss in Local Group satellites
Alexander H. Riley, Rebekka Bieri, Alis J. Deason +6
The mass-metallicity relation is a fundamental galaxy scaling law that has been extended to the faintest systems in the Local Group. We show that the small scatter in this relation…
Extreme cloud collisions in nearby barred galaxies
Tutku Kolcu, Mattia C. Sormani, Witold Maciejewski +16
The inner regions of the Milky Way are known to contain an enigmatic population of prominent molecular clouds characterised by extremely broad lines. The physical origin of these '…
Auriga Superstars: Improving the resolution and fidelity of stellar dynamics in cosmological galaxy simulations
Ruediger Pakmor, Francesca Fragkoudi, Robert J. J. Grand +7
Cosmological hydrodynamical simulations have become an indispensable tool to understand galaxies. However, computational constraints still severely limit their numerical resolution…
Quantifying the intrinsic variability due to randomness of the Auriga galaxy formation model
Ruediger Pakmor, Rebekka Bieri, Francesca Fragkoudi +6
Numerical simulations have become an indispensable tool in astrophysics. To interpret their results, it is critical to understand their intrinsic variability, that is, how much the…
Optimising the analysis of emission lines in galaxies: the case of the MUSE TIMER galaxy NGC 613
Luiz A. Silva-Lima, Dimitri A. Gadotti, Lucimara P. Martins +11
Galaxy evolution is driven by spatially distributed processes with varying timescales. Integral field spectroscopy provides spatially-resolved information about these processes. Ne…
Formation and evolution of boxy/peanut bulges in the Auriga cosmological simulations
Paula D. López, Francesca Fragkoudi, Sofía A. Cora +5
Boxy/peanut (b/p) or X-shaped bulges have been extensively explored with theory and numerical simulations of isolated galaxies. However, it is only recently that advances in hydrod…
Galaxy Zoo CEERS: Bar fractions up to z~4.0
Tobias Géron, R. J. Smethurst, Hugh Dickinson +22
We study the evolution of the bar fraction in disc galaxies between using multi-band coloured images from JWST CEERS. These images were classified by citizen scient…
Bar ages derived for the first time in nearby galaxies: Insights on secular evolution from the TIMER sample
Camila de Sá-Freitas, Dimitri A. Gadotti, Francesca Fragkoudi +9
Once galaxies settle their discs and become self-gravitating, stellar bars can form, driving the subsequent evolution of their host galaxy. Determining the ages of bars can therefo…