The Milky Way, coming into focus: Precision astrometry probes its evolution and its dark matter

S Gardner, SD McDermott, B Yanny - Progress in Particle and Nuclear …, 2021 - Elsevier
The growing trove of precision astrometric observations from the Gaia space telescope and
other surveys is revealing the structure and dynamics of the Milky Way in ever more …

Resolving local and global kinematic signatures of satellite mergers with billion particle simulations

JAS Hunt, IA Stelea, KV Johnston… - Monthly Notices of …, 2021 - academic.oup.com
In this work, we present two new∼ 109 particle self-consistent simulations of the merger of a
Sagittarius-like dwarf galaxy with a Milky Way (MW)-like disc galaxy. One model is a violent …

Vertical motion in the Galactic disc: unwinding the snail

N Frankel, J Bovy, S Tremaine… - Monthly Notices of the …, 2023 - academic.oup.com
The distribution of stars in the Milky Way disc shows a spiral structure− the snail− in the
space of velocity and position normal to the Galactic mid-plane. The snail appears as …

Dynamically constraining the length of the Milky way bar

M Lucey, S Pearson, JAS Hunt… - Monthly Notices of …, 2023 - academic.oup.com
We present a novel method for constraining the length of the Galactic bar using 6D phase-
space information to directly integrate orbits. We define a pseudo-length for the Galactic bar …

Exploring the Sgr–Milky Way–disk Interaction Using High-resolution N-body Simulations

M Bennett, J Bovy, JAS Hunt - The Astrophysical Journal, 2022 - iopscience.iop.org
The ongoing merger of the Sagittarius (Sgr) dwarf galaxy with the Milky Way is believed to
strongly affect the dynamics of the Milky Way's disk. We present a suite of 13 N-body …

Swing amplification and the Gaia phase spirals

LM Widrow - Monthly Notices of the Royal Astronomical Society, 2023 - academic.oup.com
We explore the interplay between in-plane and vertical dynamics in stellar discs within the
framework of the shearing box approximation. Julian and Toomre used the shearing sheet to …

A Comprehensive Perturbative Formalism for Phase Mixing in Perturbed Disks. I. Phase Spirals in an Infinite, Isothermal Slab

U Banik, MD Weinberg… - The Astrophysical …, 2022 - iopscience.iop.org
Galactic disks are highly responsive systems that often undergo external perturbations and
subsequent collisionless equilibration, predominantly via phase mixing. We use linear …

Vertical Phase Mixing across the Galactic Disk

ZY Li - The Astrophysical Journal, 2021 - iopscience.iop.org
Abstract By combining the Large Sky Area Multi-object Fiber Spectroscopic Telescope and
Gaia data, we investigate the vertical phase mixing across the Galactic disk. Our results …

Characterizing the 3D kinematics of young stars in the Radcliffe Wave

AJ Tu, C Zucker, JS Speagle, A Beane… - The Astrophysical …, 2022 - iopscience.iop.org
We present an analysis of the kinematics of the Radcliffe Wave, a 2.7 kpc long sinusoidal
band of molecular clouds in the solar neighborhood recently detected via 3D dust mapping …

Which Milky Way masses are consistent with the slightly declining 5–25 kpc rotation curve?

Y Jiao, F Hammer, JL Wang, YB Yang - Astronomy & Astrophysics, 2021 - aanda.org
Context. Discoveries of extended rotation curves have suggested that spiral galaxy halos
contain dark matter. This has led to many studies that estimated the total mass of the Galaxy …