Dynamics of Disks and Warps

Abstract

This chapter reviews theoretical work on the stellar dynamics of galaxy disks. All the known collective global instabilities are identified, and their mechanisms described in terms of local wave mechanics. A detailed discussion of warps and other bending waves is also given. The structure of bars in galaxies, and their effect on galaxy evolution, is now reasonably well understood, but there is still no convincing explanation for their origin and frequency. Spiral patterns have long presented a special challenge, and ideas and recent developments are reviewed. Other topics include scattering of disk stars and the survival of thin disks.

Chapter accepted to appear in Planets, Stars and Stellar Systems, vol 5, ed G. Gilmore. 32 pages, 17 figures. Includes minor corrections made in proofs. Uses emulateapj.sty

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• A Classical Morphological Analysis of Galaxies in the Spitzer Survey of Stellar Structure in Galaxies (S4G)
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• The Galactic warp revealed by Gaia DR2 kinematics
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• A fully cosmological model of a Monoceros-like ring
• Fast rotating and low-turbulence discs at $z\simeq 4.5$: Dynamical evidence of their evolution into local early-type galaxies
• Evidence of a dynamically evolving Galactic warp
• Dynamics of warped accretion discs
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• Emergence of the Gaia Phase Space Spirals from Bending Waves
• Rossby Wave Instability in Astrophysical Discs
• Bar instability in disk-halo systems
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• The global stability of M33: still a puzzle
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• Supernovae and their host galaxies - IV. The distribution of supernovae relative to spiral arms
• The kinematic signature of the Galactic warp in Gaia DR1 - I. The Hipparcos subsample
• Uncertainties in Galaxy Rotation Curves
• Mapping Milky Way disk perturbations in stellar number density and vertical velocity using Gaia DR3
• Role of gas in supporting grand spiral structure
• Asymmetric Drift in the Andromeda Galaxy (M31) as a Function of Stellar Age
• Mass Distribution and Bar Formation in Growing Disk Galaxy Models
• Warp and flare of the old Galactic disc as traced by the red clump stars
• Smoothing Rotation Curves and Mass Profiles
• Evidence for Populations-dependent vertical motions and the Long-lived Non-Steady Lopsided Milky Way Warp
• Unraveling Joint Evolution of Bars, Star Formation, and Active Galactic Nuclei of Disk Galaxies
• Massive Red Spiral Galaxies in SDSS-IV MaNGA Survey
• Warp evidences in precessing galactic bar models
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• Gaussian Process Model for the Local Stellar Velocity Field from Gaia Data Release 2
• How stars formed in warps settle into (and contaminate) thick discs
• A spiral galaxy's mass distribution uncovered through lensing and dynamics
• A statistical study of lopsided galaxies using random forest
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• Primordial Black Hole Mergers as Probes of Dark Matter in Galactic Center
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• Numerical Study of Bar Suppression in Galaxy Models Due to Disc Heating