7 papers
Milky Way's warped disc traced by AGB stars
Tanya Kushwahaa, Mikako Matsuura, Jason A. S. Hunt +3
While the presence of the Galactic warp has long been established from observations of \HI\, gas, the \textit{Gaia} measurements of over 1 billion stars with parallaxes have enable…
Self-consistent dynamical modelling of the Milky Way bar with orbital frequency analysis
Zachary Langford, Robyn Sanderson, Madeline Lucey +1
We present an update to the frequency analysis method for measuring the properties of a galactic bar. The method involves computing the fundamental frequencies of orbits in rotatin…
From Gaia to GaiaNIR: II. A new view of the Milky Way bar
Ã. Jiménez-Arranz, M. Schölch, S. Khanna +9
The Milky Way (MW) hosts a central bar whose pattern speed, orientation, and length remain uncertain, largely due to observational biases and selection effects, despite the transfo…
Phase spirals across galactic disks I: Exploring dynamical influences on winding
Kiyan Tavangar, Kathryn V. Johnston, Jason A. S. Hunt +4
The vertical phase-space spirals in the Milky Way are clear evidence of disequilibrium. However, they are challenging to study because phase mixing signals evolve under the influen…
Winding, Unwinding, Rewinding the Gaia Phase Spiral
Neige Frankel, Marcin Semczuk, Teresa Antoja +10
The Gaia Space Satellite has transformed the field of Galactic Dynamics by collecting 6D phase space information for hundreds of millions of stars. In 2018, it enabled the discover…
A Path to an All-Sky Survey with Roman
Jiwon Jesse Han, Anirudh Chiti, Kai-Feng Chen +93
A deep, space-based, all-sky near-infrared survey carried out with the Nancy Grace Roman Space Telescope would constitute a foundational astronomical infrastructure for decades to…