Nearby cosmology: from Gaia to LSST.
Relazione su invito
III - Astrofisica
Aula 32B-3 - Lunedì 17 h 16:00 - 19:00
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We plan to discuss the impact that new geometrical distances released by Gaia DR2 are going to have on low-mass (RR Lyrae) and intermediate-mass (classical Cepheids) primary distance indicators. In particular, we will focus our attention on the systematics affecting both the zero-point and the slopes of the diagnostics (Period-Luminosity, Period-Wesenheit relations) adopted to estimate individual distances. We will discuss the consequences of the new cosmic distance scale in the estimate of cosmological parameters (H0, t0) together with the implications for the early formation and evolution of the Milky Way.