James D. Gibbon

Bayesian Inference of the Tip of the Red Giant Branch: I. One-Dimensional Analysis

The tip of the red giant branch (TRGB) is a relative distance measure that can be used, as part of a cosmic distance ladder, to infer the Hubble constant. We present a Bayesian framework for TRGB inference that incorporates selection effects and propagates per-star flux uncertainties, modelling the observed catalogue a...