Gaia: Astrometric performance and current status of the project

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding

Abstract

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.

Details

Authors
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Astronomy, Astrophysics and Cosmology

Keywords

  • reference systems, astrometry, surveys, catalogs, methods: data analysis, space vehicles: instruments, stars: distances, stars: kinematics
Original languageEnglish
Title of host publicationRelativity in Fundamental Astronomy: Dynamics, Reference Frames, and Data Analysis (IAU Symposium)
PublisherCambridge University Press
Pages296-305
Volume261
Publication statusPublished - 2010
Publication categoryResearch
Peer-reviewedYes
Event261st Symposium of the International-Astronomical-Union - Virginia Beach, VA
Duration: 2009 Apr 272009 May 1

Publication series

Name
Volume261
ISSN (Print)1743-9213
ISSN (Electronic)1743-9221

Conference

Conference261st Symposium of the International-Astronomical-Union
Period2009/04/272009/05/01