Evolution of the local spiral structure of the Milky Way revealed by open clusters

Abstract

The structure and evolution of the spiral arms of our Milky Way are basic but long-standing questions in astronomy. In particular, the lifetime of spiral arms is still a puzzle and has not been well constrained from observations. In this work, we aim to inspect these issues using a large catalogue of open clusters. We compiled a catalogue of 3794 open clusters based on Gaia EDR3. A majority of these clusters have accurately determined parallaxes, proper motions, and radial velocities. The age parameters for these open clusters are collected from references or calculated in this work. In order to understand the nearby spiral structure and its evolution, we analysed the distributions, kinematic properties, vertical distributions, and regressed properties of subsamples of open clusters. We find evidence that the nearby spiral arms are compatible with a long-lived spiral pattern and might have remained approximately stable for the past 80 million years. In particular, the Local Arm, where our Sun is currently located, is also suggested to be long-lived in nature and probably a major arm segment of the Milky Way. The evolutionary characteristics of nearby spiral arms show that the dynamic spiral mechanism might be not prevalent for our Galaxy. Instead, density wave theory is more consistent with the observational properties of open clusters.

9 pages,5 figures,Accepted for publication in Astronomy & Astrophysics

References in corpus (24)

• The Gaia mission
• Trigonometric Parallaxes of Massive Star Forming Regions: VI. Galactic Structure, Fundamental Parameters and Non-Circular Motions
• Trigonometric Parallaxes Of High-Mass Star Forming Regions: Our View Of The Milky Way
• Painting a portrait of the Galactic disc with its stellar clusters
• Clusters and mirages: cataloguing stellar aggregates in the Milky Way
• The observed spiral structure of the Milky Way
• A catalog of newly identified star clusters in GAIA DR2
• Hunting for open clusters in \textit{Gaia} DR2: $582$ new OCs in the Galactic disc
• Galactic spiral structure revealed by Gaia EDR3
• Hunting for open clusters in \textit{Gaia} DR2: the Galactic anticentre
• The orbits of open clusters in the Galaxy
• Spiral structure in the outer Galactic disk. I. The Third Galactic Quadrant
• Spiral structure of the Third Galactic Quadrant and the solution to the Canis Major debate
• The local spiral structure of the Milky Way
• The orbits of 48 globular clusters in a Milky-Way-Like Barred Galaxy
• The spiral pattern rotation speed of the Galaxy and the corotation radius with GAIA DR2
• Revised Geometric Estimates of the North Galactic Pole and the Sun's Height Above the Galactic Midplane
• The evolution of the Milky Way: New insights from open clusters
• Fundamental parameters for 45 open clusters with Gaia DR2, an improved extinction correction and a metallicity gradient prior
• Local spiral structure based on the Gaia EDR3 parallaxes
• Properties of Star Clusters - II: Scale Height Evolution of Clusters
• Discovery and astrophysical properties of Galactic open clusters in dense stellar fields using Gaia DR2
• A catalogue of 74 new open clusters found in Gaia Data-Release 2
• The dynamical origin of the Local arm and the Sun's trapped orbit

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• Open superclusters I: The most populated primordial groups of open clusters in the third quadrant of the Galactic disc
• Exploration of morphological coherence in open clusters with a "core-shell'' structure
• Linear polarization study of open clusters towards the anticenter direction: Signature of the spiral arms
• Kinematics of the Galaxy from Young Open Star Clusters with Data from the Gaia EDR3 Catalogue
• Unveiling the initial conditions of open star cluster formation
• The Correlation Between Dust and Gas Contents in Molecular Clouds
• The 3D morphology of open clusters in the solar neighborhood III: Fractal dimension
• Optical linear polarization study towards Czernik 3 open cluster at different spatial scales
• Shocks in the warm neutral medium II -- Origin of neutral carbon at high pressure
• Signatures of simulated spiral arms on radial actions
• Dynamical Models of the Milky Way in Action Space with LAMOST DR8 and GAIA EDR3
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