568 citations · 8.7k across the 176 of their papers we have counts for
8 papers · 1 filter
Radial migration in numerical simulations of Milky Way-sized galaxies
Robert J. J. Grand, Daisuke Kawata
We show that in N-body simulations of isolated spiral discs, spiral arms appear to transient, recurring features that co-rotate with the stellar disc stars at all radii. As a conse…
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…
Spiral and bar driven peculiar velocities in Milky Way sized galaxy simulations
Robert J. J. Grand, Jo Bovy, Daisuke Kawata +5
We investigate the kinematic signatures induced by spiral and bar structure in a set of simulations of Milky Way-sized spiral disc galaxies. The set includes test particle simulati…
Stellar Motion around Spiral Arms: Gaia Mock Data
D. Kawata, J. A. S. Hunt, R. J. J. Grand +3
We compare the stellar motion around a spiral arm created in two different scenarios, transient/co-rotating spiral arms and density-wave-like spiral arms. We generate Gaia mock dat…
The stellar kinematics of co-rotating spiral arms in Gaia mock observations
Jason A. S. Hunt, Daisuke Kawata, Robert J. J. Grand +3
We have observed an N-body/Smoothed Particle Hydrodynamics simulation of a Milky Way like barred spiral galaxy. We present a simple method that samples N-body model particles into…