Cepheid distance measurements of SNIa host galaxies
Résumé
One of the most fundamental cosmological parameters is the current expansion rate of the Universe, i.e. the Hubble Constant (H_{0}). Recent studies revealed a significant tension between the local measurements of H_{0} using Cepheids plus Type Ia Supernovae (SNIa) and the measurements from the cosmic microwave background (CMB) observations. This tension calls for thorough investigations and it is extremely important to understand its source which could be new physics beyond the standard model of cosmology, or systematic issues in the measurements. In this project, we aim to perform an independent accurate Cepheid distance measurement to the SNIa host galaxies in the local Universe, a crucial step for the determination of H_{0}.