568 citations · 8.7k across the 176 of their papers we have counts for
20 papers · 1 filter
An ever-present snail shell triggered by a dark matter wake
Robert J. J. Grand, Rüdiger Pakmor, Francesca Fragkoudi +5
We utilize a novel numerical technique to model star formation in cosmological simulations of galaxy formation - called Superstars - to simulate a Milky Way-like galaxy with $\gtrs…
Chasing the impact of the Gaia-Sausage-Enceladus merger on the formation of the Milky Way thick disc
Ioana Ciucă, Daisuke Kawata, Yuan-Sen Ting +8
We employ our Bayesian Machine Learning framework BINGO (Bayesian INference for Galactic archaeOlogy) to obtain high-quality stellar age estimates for 68,360 red giant and red clum…
Kinematics of the Local Group gas and galaxies in the Hestia simulations
Luis Biaus, Sebastián E. Nuza, Philipp Richter +8
We investigate the kinematic properties of gas and galaxies in the Local Group (LG) using high-resolution simulations performed by the {\sc Hestia} (High-resolution Environmental S…
Cosmological gas accretion history onto the stellar discs of Milky Way-like galaxies in the Auriga simulations -- (I) Temporal dependency
Federico G. Iza, Cecilia Scannapieco, Sebastián E. Nuza +5
We use the 30 simulations of the Auriga Project to estimate the temporal dependency of the inflow, outflow and net accretion rates onto the discs of Milky Way-like galaxies. The ne…
A probabilistic deep learning model to distinguish cusps and cores in dwarf galaxies
J. Expósito-Márquez, C. B. Brook, M. Huertas-Company +4
Numerical simulations within a cold dark matter (DM) cosmology form halos whose density profiles have a steep inner slope (`cusp'), yet observations of galaxies often point towards…
Anisotropic satellite accretion onto the Local Group with HESTIA
Alexandra Dupuy, Noam I. Libeskind, Yehuda Hoffman +9
How the cosmic web feeds halos, and fuels galaxy formation is an open question with wide implications. This study explores the mass assembly in the Local Group within the context o…
Energy wrinkles and phase-space folds of the last major merger
Vasily Belokurov, Eugene Vasiliev, Alis J. Deason +5
Relying on the dramatic increase in the number of stars with full 6D phase-space information provided by the Gaia Data Release 3, we discover unambiguous signatures of phase-mixing…
Colour and infall time distributions of satellite galaxies in simulated Milky-Way analogs
Yue Pan, Christine M. Simpson, Andrey Kravtsov +6
We use the Auriga simulations to probe different satellite quenching mechanisms operating at different mass scales () in Mil…
Machine Learning for Galactic Archaeology: A chemistry-based neural network method for identification of accreted disc stars
Thorold Tronrud, Patricia B. Tissera, Facundo A. Gómez +4
We develop a method ('Galactic Archaeology Neural Network', GANN) based on neural network models (NNMs) to identify accreted stars in galactic discs by only their chemical fingerpr…
Stellar migration in the Auriga simulations
Periklis Okalidis, Robert J. J. Grand, Robert M. Yates +1
We study the presence and importance of stellar migration in the evolution of 17 Milky-Way like disk galaxies with stellar mass from t…
Is the core-cusp problem a matter of perspective: Jeans Anisotropic Modeling against numerical simulations
Wenting Wang, Ling Zhu, Zhaozhou Li +14
Mock member stars for 28 dwarf galaxies are constructed from the cosmological Auriga simulation, which reflect the dynamical status of realistic stellar tracers. The axis-symmetric…
The impact of two massive early accretion events in a Milky Way-like galaxy: repercussions for the buildup of the stellar disc and halo
Matthew D. A. Orkney, Chervin F. P. Laporte, Robert J. J. Grand +5
We identify and characterise a Milky Way-like realisation from the Auriga simulations with two consecutive massive mergers Gyr apart at high redshift, comparable to the re…
The stellar halo in Local Group Hestia simulations III. Chemical abundance relations for accreted and in-situ stars
Sergey Khoperskov, Ivan Minchev, Noam Libeskind +10
Since the chemical abundances of stars are the fossil records of the physical conditions in galaxies, they provide the key information for recovering the assembly history of galaxi…
The stellar halo in Local Group Hestia simulations II. The accreted component
Sergey Khoperskov, Ivan Minchev, Noam Libeskind +12
In the Milky Way, recent progress in the exploration of its assembly history is driven by the tremendous amount of high-quality data delivered by Gaia, which has revealed a number…
The stellar halo in Local Group Hestia simulations I. The in-situ component and the effect of mergers
Sergey Khoperskov, Ivan Minchev, Noam Libeskind +12
Theory suggests that mergers play an important role in shaping galactic discs and stellar haloes, which was observationally confirmed in the MW thanks to Gaia data. In this work, a…
Local variations of the Stellar Velocity Ellipsoid-II: the effect of the bar in the inner regions of Auriga galaxies
Daniel Walo-Martín, Francesca Pinna, Robert J. J. Grand +4
Theoretical works have shown that off-plane motions of bars can heat stars in the vertical direction during buckling but is not clear how do they affect the rest of components of t…
Velocity-dependent annihilation radiation from dark matter subhalos in cosmological simulations
Erin Piccirillo, Keagan Blanchette, Nassim Bozorgnia +4
We use the suite of Milky Way-like galaxies in the Auriga simulations to determine the contribution to annihilation radiation from dark matter subhalos in three velocity-dependent…
The Chemo-Dynamical Groups of Galactic Globular Clusters
Thomas M. Callingham, Marius Cautun, Alis J. Deason +3
We introduce a multi-component chemo-dynamical method for splitting the Galactic population of Globular Clusters (GCs) into three distinct constituents: bulge, disc, and stellar ha…
Dark matter annihilation and the Galactic Centre Excess
Robert J. J. Grand, Simon D. M. White
We compare the surface brightness profile and morphology of the Galactic Centre Excess (GCE) identified in wide-angle -ray maps from the Fermi-Large Area Telescope to dark matte…
Cold and Hot gas distribution around the Milky-Way-M31 system in the HESTIA simulations
Mitali Damle, Martin Sparre, Philipp Richter +11
Recent observations have revealed remarkable insights into the gas reservoir in the circumgalactic medium (CGM) of galaxy haloes. In this paper, we characterise the gas in the vici…