European Space Agency
Science & Technology
GAIA DATA RELEASE DOCUMENTATION
Gaia Data Release 2
Documentation release 1.2
Gaia Data Release 2
Documentation release 1.2
I
Introduction to Gaia DR2
II
Gaia data processing
2
Astrometric and photometric pre-processing
3
Astrometry
3.1
Introduction
3.2
Properties of the input data
3.3
Calibration models
3.4
Processing steps
3.5
Quality assessment and validation
3.5.1
Overview
3.5.2
Properties of the astrometric data
3.5.3
Source verification
3.5.4
Attitude verification
3.5.5
Geometric calibration verification
3.5.6
Comparisons of alternative solutions
3.5.7
Correlations in the Gaia data
3.5.8
Comparisons with space-based astrometry
3.5.9
Comparisons with ground-based astrometry
3.5.10
Astronomical checks of the data
3.5.11
Conclusions
4
Solar-System Objects
5
Photometry
6
Spectroscopy
III
Gaia data analysis
IV
Gaia catalogue
V
Gaia archive
Miscellaneous
Bibliography
3
Astrometry
3.4.7
Cross-match for the ICRS frame
3.5.1
Overview
3.5
Quality assessment and validation
Author(s): Lennart Lindegren
3.5.1
Overview
3.5.2
Properties of the astrometric data
3.5.3
Source verification
3.5.4
Attitude verification
3.5.5
Geometric calibration verification
3.5.6
Comparisons of alternative solutions
3.5.7
Correlations in the Gaia data
3.5.8
Comparisons with space-based astrometry
3.5.9
Comparisons with ground-based astrometry
3.5.10
Astronomical checks of the data
3.5.11
Conclusions
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