CORDIS Project
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This project focuses on improving the understanding of Cepheid and RR Lyrae stars to resolve discrepancies in measuring the Hubble constant. By refining stellar pulsation models, it aims to clarify systematic uncertainties affecting distance measurements in cosmology.
Classical pulsating stars such as Cepheid and RR Lyrae are sensitive probes for both the stellar astrophysics and the cosmic distance scale.
Cepheid variables play a vital role in calibrating extragalactic distance ladder to estimate the local value of the Hubble constant – present expansion rate of the Universe.
The current Hubble constant measurement in the late evolutionary Universe based on the Cepheid-Supernovae distance ladder is significantly larger than the Planck mission results from th…
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