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gaia data release 3 documentation

10.5 Cepheids

10.5.1 Introduction

We produced a list of 15 thousand confirmed all-sky Cepheid stars (see table vari_cepheid) cleaned from contaminating objects and other types of variables falling into the same period domain. For all stars we provide a number of attributes (with related errors), more specifically: period, peak-to-peak amplitudes, mean magnitudes and epoch of maximum light in G, GBP, and GRP bands (when GBP and GRP are available) as well as Fourier parameters from the G-band light curves. For a selected sub-sample of Cepheids for which reliable RVS radial velocity curves were available, we provide average radial velocity, epoch of minimum, and peak-to-peak amplitude. Also, for Cepheid stars with periods shorter than about 6 days, we supply an estimate of metallicity [Fe/H].