218 citations · 1k across the 19 of their papers we have counts for
19 papers
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 influence of bars on action-based dynamical modelling of disc galaxies
Soumavo Ghosh, Wilma H. Trick, Gregory M. Green
Action-based dynamical modelling, using stars as dynamical tracers, is an excellent diagnostic to estimate the underlying axisymmetric matter distribution of the Milky Way. However…
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…
Chemodynamical signatures of bar resonances in the Galactic disk: current data and future prospects
Adam Wheeler, Irene Abril-Cabezas, Wilma H. Trick +2
The Galactic disk exhibits complex chemical and dynamical substructure thought to be induced by the bar, spiral arms, and satellites. Here, we explore the chemical signatures of ba…
Identifying resonances of the Galactic bar in Gaia DR2: II. Clues from angle space
Wilma H. Trick
The Milky Way disk exhibits intricate orbit substructure of still-debated dynamical origin. The angle variables -- which are conjugates to the actions , and…
From birth associations to field stars: mapping the small-scale orbit distribution in the Galactic disc
Johanna Coronado, Hans-Walter Rix, Wilma H. Trick +3
Stars born at the same time in the same place should have formed from gas of the same element composition. But most stars subsequently disperse from their birth siblings, in orbit…
Accreted Globular Clusters in External Galaxies: Why Adaptive Dynamics is not the Solution
Sophia Lilleengen, Wilma H. Trick, Glenn van de Ven
Many astrophysical and galaxy-scale cosmological problems require a well determined gravitational potential which is often modeled by observers under strong assumptions. Globular c…
The globular cluster system of the Auriga simulations
Timo L. R. Halbesma, Robert J. J. Grand, Facundo A. Gómez +5
We investigate whether the galaxy and star formation model used for the Auriga simulations can produce a realistic globular cluster (GC) population. We compare statistics of GC can…
Identifying resonances of the Galactic bar in Gaia DR2: I. Clues from action space
Wilma H. Trick, Francesca Fragkoudi, Jason A. S. Hunt +2
Action space synthesizes the orbital information of stars and is well-suited to analyse the rich kinematic substructure of the disc in the \emph{Gaia} DR2 radial velocity sample (R…
Signatures of resonance and phase mixing in the Galactic disc
Jason A. S. Hunt, Mathew W. Bub, Jo Bovy +3
Gaia DR2 has provided an unprecedented wealth of information about the kinematics of stars in the Solar neighbourhood, and has highlighted the degree of features in the Galactic di…
On the ridges, undulations & streams in Gaia DR2: Linking the topography of phase-space to the orbital structure of an N-body bar
F. Fragkoudi, D. Katz, W. Trick +7
We explore the origin of phase-space substructures revealed by the second Gaia data release in the disc of the Milky Way, such as the ridges in the - plane, the undulations…
Dynamical heating across the Milky Way disc using APOGEE and
J. Ted Mackereth, Jo Bovy, Henry W. Leung +14
The kinematics of the Milky Way disc as a function of age are well measured at the solar radius, but have not been studied over a wider range of Galactocentric radii. Here, we meas…
Discriminating among theories of spiral structure using Gaia DR2
J. A. Sellwood, Wilma Trick, Ray Carlberg +2
We compare the distribution in position and velocity of nearby stars from the Gaia DR2 radial velocity sample with predictions of current theories for spirals in disc galaxies. Alt…
The Galactic Disc in Action Space as seen by Gaia DR2
Wilma H. Trick, Johanna Coronado, Hans-Walter Rix
The quality and quantity of 6D stellar position-velocity measurements in the second Gaia data release (DR2) allows to study small-scale structure in the orbit distribution of the G…
Unbiased TGASLAMOST distances and the role of binarity
Johanna Coronado, Hans-Walter Rix, Wilma H. Trick
Spectrophotometric distances to stars observed by large spectroscopic surveys offer a crucial complement to parallax distances that remain very important also after the future Gaia…
Confirming chemical clocks: asteroseismic age dissection of the Milky Way disk(s)
V. Silva Aguirre, M. Bojsen-Hansen, D. Slumstrup +22
Investigations of the origin and evolution of the Milky Way disk have long relied on chemical and kinematic identification of its components to reconstruct our Galactic past. Diffi…
Action-based Dynamical Modeling for the Milky Way Disk: The Influence of Spiral Arms
Wilma H. Trick, Jo Bovy, Elena D'Onghia +1
RoadMapping is a dynamical modeling machinery developed to constrain the Milky Way's (MW) gravitational potential by simultaneously fitting an axisymmetric parametrized potential a…
A spiral galaxy's mass distribution uncovered through lensing and dynamics
Wilma H. Trick, Glenn van de Ven, Aaron A. Dutton
We investigate the matter distribution of a spiral galaxy with a counter-rotating stellar core, SDSS J1331+3628 (J1331), independently with gravitational lensing and stellar dynami…
Action-based Dynamical Modelling for the Milky Way Disk
Wilma H. Trick, Jo Bovy, Hans-Walter Rix
We present RoadMapping, a full-likelihood dynamical modelling machinery that aims to recover the Milky Way's (MW) gravitational potential from large samples of stars in the Galacti…