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Gas rich and gas poor structures through the stream velocity effect
Cristina Popa, Smadar Naoz, Federico Marinacci +1
Using adiabatic high-resolution numerical simulations we quantify the effect of the streaming motion of baryons with respect to dark matter at the time of recombination on structur…
Accurately simulating anisotropic thermal conduction on a moving mesh
Rahul Kannan, Volker Springel, Rüdiger Pakmor +2
We present a novel implementation of an extremum preserving anisotropic diffusion solver for thermal conduction on the unstructured moving Voronoi mesh of the AREPO code. The metho…
On the stellar halo metallicity profile of Milky Way-like galaxies in the Auriga simulations
Antonela Monachesi, Facundo A. Gomez, Robert J. J. Grand +5
A recent observational study of haloes of nearby Milky Way-like galaxies shows that only half (four out of eight) of the current sample exhibits strong negative metallicity ([Fe/H]…
Vertical disc heating in Milky Way-sized galaxies in a cosmological context
Robert J. J. Grand, Volker Springel, Facundo A. Gómez +4
Vertically extended, high velocity dispersion stellar distributions appear to be a ubiquitous feature of disc galaxies, and both internal and external mechanisms have been proposed…
A fully cosmological model of a Monoceros-like ring
Facundo A. Gómez, Simon D. M. White, Federico Marinacci +4
We study the vertical structure of a stellar disk obtained from a fully cosmological high-resolution hydrodynamical simulation of the formation of a Milky Way-like galaxy. At the p…
On the relevance of chaos for halo stars in the Solar Neighbourhood
Nicolás P. Maffione, Facundo A. Gómez, Pablo M. Cincotta +3
We show that diffusion due to chaotic mixing in the Neighbourhood of the Sun may not be as relevant as previously suggested in erasing phase space signatures of past Galactic accre…