The Milky Way as an Extended Deformation Formation: A Gaia DR3 Application of the MMGS v1.19 Projection-Layer Relaxation Framework
Year: 2026
Type: preprint
Abstract: This paper applies the MMGS v1.19 projection-layer relaxation framework to the Milky Way extended deformation formation using Gaia DR3 structural tracers with update-history stratification. The analysis inherits without modification the MMGS deformation proxy S (fixed normalization σ₀ = 20 km s⁻¹), source-rate proxy Φ, projection-layer relaxation variable ζ, radial discriminator D(R), bootstrap uncertainty σ̂_D, detection threshold D_detect,95, and power threshold D_min,power. Applied to the merged Gaia DR3 sample, the retained dataset contains 45,892 structural tracers after quality cuts and yields four populated radial bins at R = 7.5, 8.0, 8.5, and 9.0 kpc. The best-constrained bin at R = 7.5 kpc gives D = 0.0637 ± 0.0512, D_detect,95 = 0.1004, and D_min,power = 0.1847. All retained bins satisfy D(Rj) < D_min,power(Rj), establishing a bounded non-detection of strong non-quasi-steady radial departure at current resolution. The paper documents the empirical meaning of the power-floor paradox: the enlarged merged run yields a best-bin power floor approximately 6.04× worse than the earlier restricted pilot (N⋆ = 2,292), because the age-conditioned merged pipeline degrades slope-estimator variance, not raw row count. The Milky Way projection layer is consistent with the slaved quasi-steady branch at present radial resolution, while weaker history-retaining or directionally loaded residual structure remains unresolved rather than excluded.
Author: Villarroel H., J. G.
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7149947550