568 citations · 8.7k across the 176 of their papers we have counts for
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The Nature of Galactic Spiral Arms
Robert J. J. Grand, Martin Roth
Spiral arms are the defining features of broad morphological classes of disc galaxies, but their nature and influence on galaxy evolution is still under debate. A key diagnostic fo…
Age and metallicity of low-mass galaxies: from their centres to their stellar halos
Elisa A. Tau, Antonela Monachesi, Facundo A. Gómez +5
We aim to analyse the metallicity and the ages of the stellar halos of low-mass galaxies to better understand their formation history. We use 17 simulated low-mass galaxies from th…
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…
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…
Thick-to-thin disc transition and gas disc shrinking induced by the Gaia-Sausage-Enceladus merger
Natsuki Funakoshi, Daisuke Kawata, Jason L. Sanders +3
Understanding the Milky Way disc formation requires characterising its structural and kinematic properties as functions of stellar age. Using red giant stars from APOGEE DR17 and G…
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…
The Milky Way in context: The formation of galactic discs and chemical sequences from a cosmological perspective
Matthew D. A. Orkney, Chervin F. P. Laporte, Robert J. J. Grand +1
We study the formation of chemical sequences in the stellar disc of Milky Way (MW)-mass galaxies in a full cosmological context with the auriga simulations. We focus on the conditi…
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…
Dark matter spiral arms in Milky Way-like halos
Marcel Bernet, Pau Ramos, Teresa Antoja +9
The coupling between the dark matter (DM) halo and the stellar disc is a key factor in galactic evolution. While the interaction between structures like the Galactic bar and DM hal…
How well can we unravel the accreted constituents of the Milky Way stellar halo? A test on cosmological hydrodynamical simulations
Guillaume F. Thomas, Giuseppina Battaglia, Robert J. J. Grand +1
Context. One of the primary goals of Galactic Archaeology is to reconstruct the Milky Way's accretion history. To achieve this, significant efforts have been dedicated to identifyi…
Stream Automatic Detection with Convolutional Neural Network (SAD-CNN)
Alex Vera-Casanova., Nicolas Monsalves Gonzalez, Facundo A. Gómez +8
Context. Galactic halos host faint substructures, such as stellar streams and shells, which provide insights into the hierarchical assembly history of galaxies. To date, such featu…
A physically motivated galaxy size definition across different state-of-the-art hydrodynamical simulations
Elena Arjona-Galvez, Salvador Cardona-Barrero, Robert J. J. Grand +6
Galaxy sizes are a key parameter to distinguishing between different galaxy types and morphologies, reflecting their formation and assembly histories. Several methods define galaxy…
GalactiKit: reconstructing mergers from debris using simulation-based inference in Auriga
Andrea Sante, Daisuke Kawata, Andreea S. Font +1
We present GalactiKit, a data-driven methodology for estimating the lookback infall time, stellar mass, halo mass and mass ratio of the disrupted progenitors of Milky Way-like gala…