599 citations · 5k across the 82 of their papers we have counts for
84 papers
LYRA: The formation and growth of nuclear star clusters in dwarf galaxies
Joaquin Sureda, Azadeh Fattahi, Sownak Bose +5
Nuclear star clusters (NSCs) are dense massive star clusters ubiquitous in galactic centres across various mass regimes, present in up to per cent of dwarf galaxies with $…
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…
Columba: isolated dwarf galaxy populations in diverse cosmological environments simulated with a cold interstellar medium
Jemima M. Briggs, Azadeh Fattahi, Robert A. Crain +7
We introduce a suite of LambdaCDM cosmological, hydrodynamical simulations that track the evolution of a large population of dwarf galaxies. The suite comprises zoom-in simulations…
Large Scale Structure and Environmental Effects on Dwarf Galaxy Growth
Mac M. McMullan, Sownak Bose, Azadeh Fattahi +3
Dwarf galaxies serve as key models for understanding galaxy assembly in the early universe, with their final properties influenced by environmental factors. Using the dark matter-o…
Implications of a contracted dark matter halo for the Milky Way's inferred virial mass
Diego Dado, Shaun T. Brown, Azadeh Fattahi +2
We investigate how reliably the global properties of Milky Way-mass dark matter haloes can be recovered from dynamical data over a limited radial range, particularly $\lesssim 30~\…
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…
Local Group analogues in a cosmological context -- I. Relating velocity structure to the cosmic web
Kai Wang, Peder Norberg, Azadeh Fattahi +1
Our Local Group, dominated in mass by the Milky Way (MW) and M31, provides a unique laboratory for testing CDM cosmology on small scales owing to its proximity. However, its con…
LYRA ultra-faints: The emergence of faint dwarf galaxies in the presence of an early Lyman-Werner background
Shaun T. Brown, Azadeh Fattahi, Thales A. Gutcke +6
We present a suite of zoom-in cosmological hydrodynamical simulations of dwarf galaxies using the LYRA galaxy formation model with an extremely high mass resolution of $4\, \mathrm…
Co-evolution of baryons and dark matter halos of LYRA dwarf galaxies
Joaquin Sureda, Shaun T. Brown, Azadeh Fattahi +4
We use the extremely high-resolution () LYRA cosmological galaxy formation simulations of six dwarf galaxies with at…
The lives and deaths of faint satellite galaxies around M31
Alex Merrow, Kyle A. Oman, Azadeh Fattahi
We present predictions for proper motions, infall times and times of first pericentric passage for 39 of M31's satellite galaxies. We estimate these by sampling satellite orbits fr…
Self-interacting dark matter in the center of a Local Group dwarf galaxy and its satellites
Thales A. Gutcke, Giulia Despali, Stephanie O'Neil +3
We present a detailed comparison of a Local Group dwarf galaxy analogue evolved in two cosmological models: the standard CDM and a self-interacting dark matter (SIDM) model with…
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…
Tiny galaxies and dark substructures: exploring the "dark" subhaloes in TNG50
Jessica E. Doppel, Mathilde Jauzac, David J. Lagattuta +2
Dark matter haloes and subhaloes that host no luminous counterpart are predicted within our current understanding of galaxy formation within a CDM paradigm. Observational tests,…
Auriga Streams I: disrupting satellites surrounding Milky Way-mass haloes at multiple resolutions
Alexander H. Riley, Nora Shipp, Christine M. Simpson +8
In a hierarchically formed Universe, galaxies accrete smaller systems that tidally disrupt as they evolve in the host's potential. We present a complete catalogue of disrupting gal…
Apostle--Auriga: Effects of stellar feedback subgrid models on the evolution of angular momentum in disc galaxies
Hang Yang, Shihong Liao, Azadeh Fattahi +7
Utilizing the Apostle--Auriga simulations, which start from the same zoom-in initial conditions of Local Group-like systems but run with different galaxy formation subgrid models a…
The accreted stellar haloes of Milky Way-mass galaxies as a probe of the nature of the dark matter
Victor J. Forouhar Moreno, Azadeh Fattahi, Alis J. Deason +2
Galactic stellar haloes are largely composed of the remnants of galaxies accreted during the assembly of their host galaxies, and hence their properties reflect the mass spectrum a…
ARTEMIS emulator: exploring the effect of cosmology and galaxy formation physics on Milky Way-mass haloes and their satellites
Shaun T. Brown, Azadeh Fattahi, Ian G. McCarthy +3
We present the new ARTEMIS Emulator suite of high resolution (baryon mass of M) zoom-in simulations of Milky Way mass systems. Here, three ha…
Pre-supernova stellar feedback in nearby starburst dwarf galaxies
Lucie E. Rowland, Anna F. McLeod, Azadeh Fattahi +7
Stellar feedback in dwarf galaxies remains, to date, poorly explored, yet is crucial to understanding galaxy evolution in the early Universe. In particular, pre-supernova feedback…
Magnetic field amplification in cosmological zoom simulations from dwarf galaxies to galaxy groups
Ruediger Pakmor, Rebekka Bieri, Freeke van de Voort +6
Magnetic fields are ubiquitous in the Universe. Recently, cosmological simulations of galaxies have successfully begun to incorporate magnetic fields and their evolution in galaxie…
Are there any extragalactic high speed dark matter particles in the Solar neighborhood?
Isabel Santos-Santos, Nassim Bozorgnia, Azadeh Fattahi +1
We use the APOSTLE suite of cosmological hydrodynamical simulations of the Local Group to examine the high speed tail of the local dark matter velocity distribution in simulated Mi…
Can we really pick and choose? Benchmarking various selections of Gaia Enceladus/Sausage stars in observations with simulations
Andreia Carrillo, Alis J. Deason, Azadeh Fattahi +2
Large spectroscopic surveys plus Gaia astrometry have shown us that the inner stellar halo of the Galaxy is dominated by the debris of Gaia Enceladus/Sausage (GES). With the richne…
Exploring the diversity and similarity of radially anisotropic Milky Way-like stellar haloes: implications for disrupted dwarf galaxy searches
Matthew D. A. Orkney, Chervin F. P. Laporte, Robert J. J. Grand +7
We investigate the properties of mergers comparable to the Gaia-Sausage-Enceladus (GSE) using cosmological hydrodynamical simulations of Milky Way-like galaxies. The merger progeni…
Unravelling the mass spectrum of destroyed dwarf galaxies with the metallicity distribution function
Alis J. Deason, Sergey E. Koposov, Azadeh Fattahi +1
Accreted stellar populations are comprised of the remnants of destroyed galaxies, and often dominate the `stellar haloes' of galaxies such as the Milky Way (MW). This ensemble of e…
The impact of the Large Magellanic Cloud on dark matter direct detection signals
Adam Smith-Orlik, Nima Ronaghi, Nassim Bozorgnia +9
We study the effect of the Large Magellanic Cloud (LMC) on the dark matter (DM) distribution in the Solar neighborhood, utilizing the Auriga magneto-hydrodynamical simulations of M…