Signatures of simulated spiral arms on radial actions
arXiv:2412.17515 · doi:10.1051/0004-6361/202453611
Abstract
Among the various implications of the spiral arms, it has been observed in the Milky Way disc that the distribution of radial actions from the Gaia Data Release 3 exhibits structures that may be related to the spiral arms. Our goal is to investigate the relationship between regions of low radial action identified in simulated discs and the location of the spiral arms, such as that suggested in Palicio et al. (2023) for the Galaxy. For a sample of 23 simulated spiral galaxies, we modelled the axisymmetric component of their gravitational potential to compute the radial action of their stellar particles using the Staeckel fudge. The spatial distribution of the radial action was then compared to the location of the spiral arms, identified as overdensities in the stellar surface density using a kernel density estimator. Our analysis reveals a strong correlation between the radial action distribution and the spiral arms in 18 of 23 simulated galaxies. However, notable discrepancies are observed in the remaining five, since they are profoundly out-of-equilibrium systems, such as galaxies influenced by external interactions or spiral arms still in the process of winding up. We have confirmed that, in general, there is a tendency of spatial correlation between spiral arms and stellar populations featuring low values of the radial action, as discussed in Palicio et al. (2023). However, discrepancies between features in the radial action distribution and the spiral structure can be interpreted as signatures of recent disturbances, a scenario applicable to the Milky Way. Furthermore, populations at least as old as 3 Gyr trace the spiral arms with no significant misalignment across age bins. A linear relation between the maximum value of the radial action of the spiral arms and the vertical scale-length is found, which is also satisfied by the Milky Way.
arXiv commentAccepted for publication in A&A. The manuscript has been updated with the new layout
References in corpus (82)
- Gaia Data Release 2. Summary of the contents and survey properties
- Gaia Data Release 3: Summary of the content and survey properties
- Introducing the Illustris Project: Simulating the coevolution of dark and visible matter in the Universe
- Secular Evolution and the Formation of Pseudobulges in Disk Galaxies
- The Galaxy in Context: Structural, Kinematic and Integrated Properties
- galpy: A Python Library for Galactic Dynamics
- Trigonometric Parallaxes of High Mass Star Forming Regions: the Structure and Kinematics of the Milky Way
- The Milky Way Tomography with SDSS: I. Stellar Number Density Distribution
- The mass distribution and gravitational potential of the Milky Way
- Radial Mixing in Galactic Discs
- First Results from the TNG50 Simulation: Galactic outflows driven by supernovae and black hole feedback
- First Results from the TNG50 Simulation: The evolution of stellar and gaseous disks across cosmic time
- Trigonometric Parallaxes Of High-Mass Star Forming Regions: Our View Of The Milky Way
- Galaxy Zoo 1 : Data Release of Morphological Classifications for nearly 900,000 galaxies
- Galaxy Zoo 2: detailed morphological classifications for 304,122 galaxies from the Sloan Digital Sky Survey
- A dynamically young and perturbed Milky Way disk
- A New Mechanism for Radial Migration in Galactic Disks: Spiral-Bar Resonance Overlap
- Mass models of the Milky Way
- Population effects on the Red Giant Clump absolute magnitude, and distance determinations to nearby galaxies
- Actions for axisymmetric potentials
- Dawes Review 4: Spiral Structures in Disc Galaxies
- Gaia Data Release 3: Analysis of RVS spectra using the General Stellar Parametriser from spectroscopy
- Self-Perpetuating Spiral Arms in Disk Galaxies
- Introducing the NewHorizon simulation: Galaxy properties with resolved internal dynamics across cosmic time
- The GALAH survey and Gaia DR2: dissecting the stellar disc's phase space by age, action, chemistry and location
- Near-IR and Optical Morphology of Spiral Galaxies
- The Spiral Structure of the Outer Milky Way in Hydrogen
- Radial migration in galactic disks caused by resonance overlap of multiple patterns: Self-consistent simulations
- Revisiting the Hubble sequence in the SDSS DR7 spectroscopic sample: a publicly available bayesian automated classification
- Simulations of the grand design galaxy M51: a case study for analysing tidally induced spiral structure
- The dynamics of stars around spiral arms
- Vertical disc heating in Milky Way-sized galaxies in a cosmological context
- On the origin of the chemical bimodality of disk stars: A tale of merger and migration
- Signatures of radial migration in barred galaxies: Azimuthal variations in the metallicity distribution of old stars
- Gaia Data Release 3: Mapping the asymmetric disc of the Milky Way
- Transient spirals as superposed instabilities
- Galactic spiral structure revealed by Gaia EDR3
- Galaxy Zoo: comparing the demographics of spiral arm number and a new method for correcting redshift bias
- Dynamics of stars around spiral arms in an N-body/SPH simulated barred-spiral galaxy
- Understanding the spiral structure of the Milky Way using the local kinematic groups
- A review of action estimation methods for galactic dynamics
- Galactic seismology: the evolving "phase spiral" after the Sagittarius dwarf impact
- Keeping it Cool: Much Orbit Migration, yet Little Heating, in the Galactic Disk
- Physical Properties of Tidal Features in Interacting Disk Galaxies
- Galaxy And Mass Assembly (GAMA): ugrizYJHK Sérsic luminosity functions and the cosmic spectral energy distribution by Hubble type
- Signatures of resonance and phase mixing in the Galactic disc
- The Effects of Radial Migration on the Vertical Structure of Galactic Discs
- Chaos caused by resonance overlap in the solar neighborhood -- Spiral structure at the Bar's 2:1 outer Lindblad resonance
- Fast estimation of orbital parameters in Milky-Way-like potentials
- A comparison of the local spiral structure from Gaia DR2 and VLBI maser parallaxes
- The Alma catalog of OB stars. II. A cross-match with Gaia DR2 and an updated map of the solar neighbourhood
- Spiral arm pitch angle and galactic shear rate in N-body simulations of disc galaxies
- A numerical study of interactions and stellar bars
- Evolution of the local spiral structure of the Milky Way revealed by open clusters
- Mapping Luminous Hot Stars in the Galaxy
- Local spiral structure based on the Gaia EDR3 parallaxes
- Spiral arm crossings inferred from ridges in Gaia stellar velocity distributions
- Spiral instabilities: Mechanism for recurrence
- Galaxy Zoo: Unwinding the Winding Problem - Observations of Spiral Bulge Prominence and Arm Pitch Angles Suggest Local Spiral Galaxies are Winding
- Discriminating among theories of spiral structure using Gaia DR2
- Chemical Cartography with LAMOST and Gaia Reveal Azimuthal and Spiral Structure in the Galactic Disk
- The chemical signature of the Galactic spiral arms revealed by Gaia DR3
- Tracing the Milky Way warp and spiral arms with classical Cepheids
- Three-component Stackel potentials satisfying recent estimates of Milky Way parameters
- Galaxy Zoo: star-formation versus spiral arm number
- The stellar kinematics of co-rotating spiral arms in Gaia mock observations
- Galactic seismology: joint evolution of impact-triggered stellar and gaseous disc corrugations
- Spiral-like features in the disc revealed by Gaia DR3 radial actions
- Local Spiral Structure Traced by Red Clump Stars
- The Contribution of Spiral Arms to the Thick Disk along the Hubble Sequence
- The Milky Way as Seen by Classical Cepheids II: Spiral Structure
- Kinematic footprint of the Milky Way spiral arms in Gaia EDR3
- Trigonometric Parallaxes of Four Star-forming Regions in the Distant Inner Galaxy
- 2D chemical evolution models II. Effects of multiple spiral arm patterns on O, Eu, Fe and Ba abundance gradients
- Action-based Dynamical Modeling for the Milky Way Disk: The Influence of Spiral Arms
- Swing Amplification of Galactic Spiral Arms: Phase Synchronization of Stellar Epicycle Motion
- Constraints on the history of Galactic spiral arms revealed by Gaia GSP-Spec alpha-elements
- Five methods for determining pattern speeds in galaxies
- The Outer spiral arm of the Milky Way using Red Clump stars
- 3D structure of the Milky Way out to 10 kpc from the Sun. Catalogue of large molecular clouds in the Galactic Plane
- Investigating the vertical distribution of the disk as a function of radial action
- Investigating the vertical distribution of the disk as a function of radial action: Results from simulations