Calibrating the Cepheid Period-Luminosity relation with the VLTI

Details Calibrating the Cepheid Period-Luminosity relation with the VLTI Calibrating the Cepheid Period-Luminosity relation with the VLTI

2002-04-09

arxiv.org/abs/astro-ph/0204168v1

Astronomy and Astrophysics

Astrophysics

3 pages, 2 postscript figures, uses eas.cls LaTeX class file, to appear in the proc. Eurowinter School "Observing with the VLT

Scientific paper

The VLTI is the ideal instrument for measuring the distances of nearby Cepheids with the Baade-Wesselink method, allowing an accurate recalibration of the Cepheid Period-Luminosity relation. The high accuracy required by such measurement, however, can only be reached taking into account the effects of limb darkening, and its dependence on the Cepheid pulsations. We present here our new method to compute phase- and wavelength-dependent limb darkening profiles, based on hydrodynamic simulation of Classical Cepheid atmospheres.

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