Proc. IAU volume 13, issue S334, P139-146 2017 DOI: 10.1017/s1743921317008316 View full text
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Antonella Vallenari

Abstract: AbstractThe first Gaia data release took place in 2016, delivering astrometry and photometry for more than 1 billion sources in our Galaxy. After almost one year, Gaia data have already become the reference for astrometry, with applications in a wide range of topics. In this paper we summarize the impressive quality and the known limitations of the data; and we present the extensive validation work that was done by the Gaia Consortium before publication. We review a few results based on Gaia first data release…

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