Isochrone fitting of Galactic globular clusters - IX. Tip of the red-giant branch for 27 clusters and constraints on new particle physics

arXiv:2608.04801 · hep-ph, astro-ph.GA · Submitted 2026-08-05 · Read on arXiv

hep-ph, astro-ph.GA

Submitted: 2026-08-05

Updated: 2026-09-25

Comments: 48 pages, 13 figures

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

Terminology

• Core — 49× in this paper · explained in 2 episodes
• Metallicity — 16× in this paper · explained in 3 episodes
• Calibration — 11× in this paper · explained in 7 episodes
• Abundance — 10× in this paper · explained in 1 episode
• Degeneracy — 7× in this paper · explained in 3 episodes
• Hubble Space Telescope — 7× in this paper
• alpha — 6× in this paper · explained in 1 episode
• Consistency — 3× in this paper · explained in 3 episodes
• Modules for Experiments in Stellar Astrophysics — 2× in this paper
• Robustness — 2× in this paper · explained in 5 episodes
• Accuracy — 1× in this paper · explained in 1 episode
• Benchmark — 1× in this paper · explained in 2 episodes
• Channel of the Advanced Camera for Surveys — 1× in this paper

Sources

• The Low-Energy Frontier of Particle Physics
• Astrophysical Axion Bounds: The 2024 Edition
• Neutrino and axion bounds from the globular cluster M5 (NGC 5904)
• Cool WISPs for stellar cooling excesses
• Isochrone Fitting of Galactic Globular Clusters -- VIII. Homogeneous estimates of parameters for 27 clusters
• Modules for Experiments in Stellar Astrophysics (MESA)
• Modules for Experiments in Stellar Astrophysics (MESA): Giant Planets, Oscillations, Rotation, and Massive Stars
• Modules for Experiments in Stellar Astrophysics (MESA): Binaries, Pulsations, and Explosions
• Modules for Experiments in Stellar Astrophysics (MESA): Convective Boundaries, Element Diffusion, and Massive Star Explosions
• Modules for Experiments in Stellar Astrophysics (MESA): Pulsating Variable Stars, Rotation, Convective Boundaries, and Energy Conservation
• Modules for Experiments in Stellar Astrophysics (MESA): Time-Dependent Convection, Energy Conservation, Automatic Differentiation, and Infrastructure
• The Dartmouth Stellar Evolution Database
• The updated BaSTI stellar evolution models and isochrones: II. alpha-enhanced calculations
• The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters. XVI. The helium abundance of multiple populations
• The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters - XVII. Public Catalogue Release
• Gaia Data Release 3: Summary of the content and survey properties
• Homogeneous photometry VII. Globular clusters in the Gaia era
• The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters. XXIII. Proper-motion catalogs and internal kinematics
• Mapping the differential reddening in globular clusters
• Isochrone fitting of Galactic globular clusters - I. NGC 5904

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