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The Gaia mission : Science, organization and present status

Lindegren, L. LU ; Babusiaux, C.; Bailer-Jones, C.; Bastian, U.; Brown, A. G A; Cropper, M.; Høg, E.; Jordi, C.; Katz, D. and Van Leeuwen, F., et al. (2007) In Proceedings of the International Astronomical Union 3(S248). p.217-223
Abstract

The ESA space astrometry mission Gaia will measure the positions, parallaxes and proper motions of the 1 billion brightest stars on the sky. Expected accuracies are in the 725 as range down to 15 mag and sub-mas accuracies at the faint limit (20 mag). The astrometric data are complemented by low-resolution spectrophotometric data in the 3301000 nm wavelength range and, for the brighter stars, radial velocity measurements. The scientific case covers an extremely wide range of topics in galactic and stellar astrophysics, solar system and exoplanet science, as well as the establishment of a very accurate, dense and faint optical reference frame. With a planned launch around 2012 and an (extended) operational lifetime of 6 years, final... (More)

The ESA space astrometry mission Gaia will measure the positions, parallaxes and proper motions of the 1 billion brightest stars on the sky. Expected accuracies are in the 725 as range down to 15 mag and sub-mas accuracies at the faint limit (20 mag). The astrometric data are complemented by low-resolution spectrophotometric data in the 3301000 nm wavelength range and, for the brighter stars, radial velocity measurements. The scientific case covers an extremely wide range of topics in galactic and stellar astrophysics, solar system and exoplanet science, as well as the establishment of a very accurate, dense and faint optical reference frame. With a planned launch around 2012 and an (extended) operational lifetime of 6 years, final results are expected around 2021. We give a brief overview of the science goals of Gaia, the overall project organisation, expected performance, and some key technical features and challenges.

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publication status
published
subject
keywords
Astrometry, Galaxy: kinematics and dynamics, Planetary systems, Relativity, Space vehicles, Stars: fundamental parameters, Techniques: photometric, Techniques: radial velocities
in
Proceedings of the International Astronomical Union
volume
3
issue
S248
pages
7 pages
publisher
Cambridge University Press
external identifiers
  • scopus:47049115347
ISSN
1743-9213
DOI
10.1017/S1743921308019133
language
English
LU publication?
yes
id
ba84c1ca-060a-40ca-b9f2-12ffa813a290
date added to LUP
2016-12-29 17:09:58
date last changed
2017-10-22 05:24:28
@article{ba84c1ca-060a-40ca-b9f2-12ffa813a290,
  abstract     = {<p>The ESA space astrometry mission Gaia will measure the positions, parallaxes and proper motions of the 1 billion brightest stars on the sky. Expected accuracies are in the 725 as range down to 15 mag and sub-mas accuracies at the faint limit (20 mag). The astrometric data are complemented by low-resolution spectrophotometric data in the 3301000 nm wavelength range and, for the brighter stars, radial velocity measurements. The scientific case covers an extremely wide range of topics in galactic and stellar astrophysics, solar system and exoplanet science, as well as the establishment of a very accurate, dense and faint optical reference frame. With a planned launch around 2012 and an (extended) operational lifetime of 6 years, final results are expected around 2021. We give a brief overview of the science goals of Gaia, the overall project organisation, expected performance, and some key technical features and challenges.</p>},
  author       = {Lindegren, L. and Babusiaux, C. and Bailer-Jones, C. and Bastian, U. and Brown, A. G A and Cropper, M. and Høg, E. and Jordi, C. and Katz, D. and Van Leeuwen, F. and Luri, X. and Mignard, F. and De Bruijne, J. H J and Prusti, T.},
  issn         = {1743-9213},
  keyword      = {Astrometry,Galaxy: kinematics and dynamics,Planetary systems,Relativity,Space vehicles,Stars: fundamental parameters,Techniques: photometric,Techniques: radial velocities},
  language     = {eng},
  number       = {S248},
  pages        = {217--223},
  publisher    = {Cambridge University Press},
  series       = {Proceedings of the International Astronomical Union},
  title        = {The Gaia mission : Science, organization and present status},
  url          = {http://dx.doi.org/10.1017/S1743921308019133},
  volume       = {3},
  year         = {2007},
}