Direct Calibration of the Cepheid Period-Luminosity relation (Based on data from the ESA HIPPARCOS astrometry satellite)

P. Lanoix, G. Paturel, R. Garnier

After the first release of HIPPARCOS data, Feast & Catchpole gave a new value to the zero-point of the visual Cepheid Period-Luminosity relation based on trigonometric parallaxes.…