Cepheid distance scale: anything new?

Dr. Giuseppe Bono

Abstract

We present recent theoretical and empirical results concerning the accuracy of Cepheid distance estimates based on optical and near-infrared (NIR) Period-Luminosity (PL) relations. In particular, we plan to discuss the dependence of both slope and zero-point on the metal content using a large sample of extragalactic Cepheids. Moreover, we discuss pros and cons of optical and NIR reddening free Period-Wesenheit relations. We also mention the impact that GAIA will have on the precision of the Cepheid distance scale and the role that E-ELT will play in the identification of Cepheids beyond the Local Volume.

About the talk

Cepheid distance scale: anything new?
Dr. Giuseppe Bono
INAF, Osservatorio Astronomico di Roma, Italy
Wednesday June 9, 2010
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