Expanding stellar associations as Galactic accelerometers

arXiv:2608.05297 · astro-ph.GA · Submitted 2026-08-05 · Read on arXiv

Till Sawala, Núria Miret Roig

University of Helsinki · University of Barcelona

astro-ph.GA

Submitted: 2026-08-05

Comments: 13 pages, 8 figures. Accepted in A&A. Full analysis code is provided

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Trace — 34× in this paper · explained in 2 episodes
• Velocity Dispersion — 7× in this paper · explained in 2 episodes
• Degeneracy — 3× in this paper · explained in 3 episodes
• Monte Carlo — 3× in this paper
• Abundance — 2× in this paper · explained in 1 episode
• Accuracy — 1× in this paper · explained in 1 episode
• Anisotropy — 1× in this paper · explained in 3 episodes
• Maunakea Spectroscopic Explorer — 1× in this paper
• Objective Function — 1× in this paper · explained in 2 episodes

Sources

• The Montreal Open Clusters and Associations (MOCA) Database: A Census of Nearby Associations, Open Clusters, and Young Substellar Objects within 500 pc of the Sun
• GaiaNIR: Combining optical and Near-Infra-Red (NIR) capabilities with Time-Delay-Integration (TDI) sensors for a future Gaia-like mission
• Theoretical Predictions for the Inner Dark Matter Distribution in the Milky Way Informed by Simulations
• Indirect Detection of Dark Matter in the Galaxy
• The Wide-field Spectroscopic Telescope (WST) Science White Paper
• The Detailed Science Case for the Maunakea Spectroscopic Explorer, 2019 edition

Related papers

• Apparent Stability in Self-Gravitating Turbulence and the Evolution of Molecular Clouds
• Two sets of potential-density basis pairs for the study of radial perturbations in collisionless spherical stellar systems
• Constraining reionization-era Ly alpha escape with JELS-MUSE: a highly complete H alpha-selected sample at z about6.1
• Deriving volume density profiles of filaments from observed surface densities
• Little Red Dots and Supermassive Black Hole Seed Formation in Ultralight Dark Matter Halos
• MEGATRON: how the first stars can create an iron metallicity plateau in the smallest dwarf galaxies