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gaia data release 3 documentation

10.1 Introduction

10.1.1 Overview

The Variability Processing and Analysis Coordination Unit (CU7) and its associated Data Processing Centre in Geneva (DPCG) gather about 60 people, spread over 18 institutes, most of which are located in Europe.

The approach to successive data releases is iterative in the sense that more variability types with lower signal to noise are included progressively. In this third data release, we again make a significant jump from the first two data releases: in Gaia DR1, we released 3194 Cepheid and RR Lyrae star candidates, in Gaia DR2 we reached more than 550 thousand stars, with 6 variability types, and in Gaia DR3 we released over 14.2 million sources and about 30 (variability) types, including about 1.3 million sources (variable or not) in the Gaia Andromeda Photometric Survey (GAPS) and 2.5 million galaxies.