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Lennart Lindegren. Profile picture.

Lennart Lindegren

Professor

Lennart Lindegren. Profile picture.

Gaia: Astrometric performance and current status of the project

Author

  • Lennart Lindegren

Summary, in English

The scientific objectives of the Cain mission cover areas of galactic structure and evolution, stellar astrophysics, exoplanets, solar system physics, and fundamental physics. Astrometrically, its main contribution will be the determination of millions of absolute stellar parallaxes and the establishment of a very accurate, dense and faint non-rotating optical reference frame. With a planned launch in spring 2012, the project is in its advanced implementation phase. In parallel, preparations for the scientific data processing are well under way within the Cain Data Processing and Analysis Consortium. Final mission results are expected around 2021, but early releases of preliminary data, are expected. This review summarizes the main science goals and overall organisation of the project, the measurement principle and core astrometric solution, and provide an updated overview of the expected astrometric performance.

Department/s

  • Lund Observatory - Undergoing reorganization

Publishing year

2010

Language

English

Pages

296-305

Publication/Series

Relativity in Fundamental Astronomy: Dynamics, Reference Frames, and Data Analysis (IAU Symposium)

Volume

261

Document type

Conference paper

Publisher

Cambridge University Press

Topic

  • Astronomy, Astrophysics and Cosmology

Keywords

  • reference systems
  • astrometry
  • surveys
  • catalogs
  • methods: data analysis
  • space vehicles: instruments
  • stars: distances
  • stars: kinematics

Conference name

261st Symposium of the International-Astronomical-Union

Conference date

2009-04-27 - 2009-05-01

Status

Published

ISBN/ISSN/Other

  • ISSN: 1743-9213
  • ISSN: 1743-9221