The value of the Hubble-Lema\^itre constant queried by Type Ia Supernovae: A journey from the Cal\'an-Tololo Project to the Carnegie Supernova Program

Understand

We assess the robustness of the two highest rungs of the "cosmic distance ladder" for Type Ia supernovae and the determination of the Hubble-Lema\^itre constant.

• In this analysis, we hold fixed Rung 1 as the distance to the LMC determined to 1 % using Detached Eclipsing Binary stars.
• For Rung 2 we analyze two methods, the TRGB and Cepheid distances for the luminosity calibration of Type Ia supernovae in nearby galaxies.
• For Rung 3 we analyze various modern digital supernova samples in the Hubble flow, such as the Cal\'an-Tololo, CfA, CSP, and Supercal datasets.