Variable stars as standard candles and stellar tracers

Details Variable stars as standard candles and stellar tracers Variable stars as standard candles and stellar tracers

2004-12-10

arxiv.org/abs/astro-ph/0412260v1

Astronomy and Astrophysics

Astrophysics

8 pages, 7 postscript figures, invited talk in "The Three Dimensional Universe with Gaia", ESA, SP-576, in press

Scientific paper

We review the current status of classical Cepheid and RR Lyrae distance scales. We discuss the most recent theoretical and empirical findings together with pros and cons of different methods. The use of Cepheids and RR Lyrae stars as stellar tracers are also discussed. Preliminary findings concerning the impact that GAIA will have on the calibration of distance determinations and astrophysical parameters are also presented.

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