The second data release from ESA’s Gaia mission has revealed many ridge-like structures in the velocity distribution of the Milky Way. We show that these can arise naturally from winding transient spiral structure that is commonly seen in N-body simulations of disc galaxies. We construct test particle models of the winding spiral structure, and compare the resulting distribution of orbits with the observed two-dimensional velocity distribution in the extended solar neighbourhood and with the distribution of rotational velocities over 8 kpc along the Sun–Galactic-centre–Galactic anticentre line. We show that the ridges in these observations are well reproduced by the winding spiral model. Additionally, we demonstrate that the transient windi...
[Aims] We aim to study the phase spiral in the Milky Way (MW) disc with data from the third data rel...
Spiral density wave theory attempts to describe the spiral pattern in spiral galaxies in terms of a ...
We present deep optical long-slit spectra of 17 edge-on spiral galaxies of intermediate to late morp...
Gaia DR2 has provided an unprecedented wealth of information about the kinematics of stars in the So...
We compare the distribution in position and velocity of nearby stars from the Gaia DR2 radial veloci...
Using of a new N-body simulation, as well as Gaia DR2/EDR3 data complemented by data from the Galah,...
[Context] The physical processes driving the formation of Galactic spiral arms are still under debat...
We seek to understand the origin of radial migration in spiral galaxies by analysing in detail the s...
We investigate the kinematic signatures induced by spiral and bar structure in a set of simulations ...
Gaia DR2 has revealed new small-scale and large-scale patterns in the phase-space distribution of st...
We use Gaia DR2 astrometric and line-of-sight velocity information combined with two sets of distanc...
International audienceContext. The impact of Sagittarius and other satellite galaxies such as the La...
With the advent of the Gaia data, the unprecedented kinematic census of great part of the Milky Way ...
International audienceMaking use of a new high-resolution spiral galaxy simulation as well as Gaia D...
International audienceContext. The details of the effect of the bar and spiral arms on the disc dyna...
[Aims] We aim to study the phase spiral in the Milky Way (MW) disc with data from the third data rel...
Spiral density wave theory attempts to describe the spiral pattern in spiral galaxies in terms of a ...
We present deep optical long-slit spectra of 17 edge-on spiral galaxies of intermediate to late morp...
Gaia DR2 has provided an unprecedented wealth of information about the kinematics of stars in the So...
We compare the distribution in position and velocity of nearby stars from the Gaia DR2 radial veloci...
Using of a new N-body simulation, as well as Gaia DR2/EDR3 data complemented by data from the Galah,...
[Context] The physical processes driving the formation of Galactic spiral arms are still under debat...
We seek to understand the origin of radial migration in spiral galaxies by analysing in detail the s...
We investigate the kinematic signatures induced by spiral and bar structure in a set of simulations ...
Gaia DR2 has revealed new small-scale and large-scale patterns in the phase-space distribution of st...
We use Gaia DR2 astrometric and line-of-sight velocity information combined with two sets of distanc...
International audienceContext. The impact of Sagittarius and other satellite galaxies such as the La...
With the advent of the Gaia data, the unprecedented kinematic census of great part of the Milky Way ...
International audienceMaking use of a new high-resolution spiral galaxy simulation as well as Gaia D...
International audienceContext. The details of the effect of the bar and spiral arms on the disc dyna...
[Aims] We aim to study the phase spiral in the Milky Way (MW) disc with data from the third data rel...
Spiral density wave theory attempts to describe the spiral pattern in spiral galaxies in terms of a ...
We present deep optical long-slit spectra of 17 edge-on spiral galaxies of intermediate to late morp...