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Gaia validation tasks

Published online by Cambridge University Press:  17 July 2015

C. Fabricius
C. Fabricius*
Affiliation:
Institute of Space Studies of Catalonia (IEEC), Barcelona, Spain
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Abstract

Before Gaia data are published, they will undergo scrutiny in several different validation processes. Each leg of the data reduction will have its own specialised validation with focus on the difficult points for that task. In addition, when the combined catalogue is ready for release, it will undergo an independent, more global, validation. All kinds of properties of the catalogue are checked, and it is of particular interest to test if the error estimates are realistic, and if the parameters are unbiased. We also look briefly at the experiences from other projects like 2MASS and Hipparcos, and address recent worries that Hipparcos was wrong and that Gaia may therefore also be wrong.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 68: The Milky Way Unravelled by Gaia: GREAT Science from the Gaia Data Releases , 2014 , pp. 57 - 60
Copyright
© EAS, EDP Sciences, 2015

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