Advanced

Implementation of the Global Parameters Determination in Gaia's Astrometric Solution (AGIS)

Raison, F.; Olias, A.; Hobbs, David LU and Lindegren, Lennart LU (2010) Astronomical Data Analysis Software and Systems XIX In Astronomical Society of the Pacific Conference Series 434. p.386-389
Abstract
Gaia is ESA’s space astrometry mission with a foreseen launch date in early 2012. Its main objective is to perform a stellar census of the 1000 Million brightest objects in our galaxy (completeness to V=20 mag) from which an astrometric catalog of micro-arcsec level accuracy will be constructed. A key element in this endeavor is the Astrometric Global Iterative Solution (AGIS). A core part of AGIS is to determine the accurate spacecraft attitude, geometric instrument calibration and astrometric model parameters for a well-behaved subset of all the objects (the ‘primary stars’). In addition, a small number of global parameters will be estimated, one of these being PPN γ. We present here the implementation of the algorithms dedicated to the... (More)
Gaia is ESA’s space astrometry mission with a foreseen launch date in early 2012. Its main objective is to perform a stellar census of the 1000 Million brightest objects in our galaxy (completeness to V=20 mag) from which an astrometric catalog of micro-arcsec level accuracy will be constructed. A key element in this endeavor is the Astrometric Global Iterative Solution (AGIS). A core part of AGIS is to determine the accurate spacecraft attitude, geometric instrument calibration and astrometric model parameters for a well-behaved subset of all the objects (the ‘primary stars’). In addition, a small number of global parameters will be estimated, one of these being PPN γ. We present here the implementation of the algorithms dedicated to the determination of the global parameters. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
Astronomical Society of the Pacific Conference Series
editor
Mizumoto, Yoshihiko; Morita, Koh-Ichiro and Ohishi, Masatoshi
volume
434
pages
4 pages
publisher
Astronomical Society of the Pacific
conference name
Astronomical Data Analysis Software and Systems XIX
ISBN
978-1-58381-748-3
language
English
LU publication?
yes
id
09b51c28-8154-4d63-be37-adff82f0aa8b (old id 1895656)
alternative location
http://www.aspbooks.org/a/volumes/article_details/?paper_id=32173
date added to LUP
2011-04-29 15:50:08
date last changed
2016-04-16 08:03:05
@misc{09b51c28-8154-4d63-be37-adff82f0aa8b,
  abstract     = {Gaia is ESA’s space astrometry mission with a foreseen launch date in early 2012. Its main objective is to perform a stellar census of the 1000 Million brightest objects in our galaxy (completeness to V=20 mag) from which an astrometric catalog of micro-arcsec level accuracy will be constructed. A key element in this endeavor is the Astrometric Global Iterative Solution (AGIS). A core part of AGIS is to determine the accurate spacecraft attitude, geometric instrument calibration and astrometric model parameters for a well-behaved subset of all the objects (the ‘primary stars’). In addition, a small number of global parameters will be estimated, one of these being PPN γ. We present here the implementation of the algorithms dedicated to the determination of the global parameters.},
  author       = {Raison, F. and Olias, A. and Hobbs, David and Lindegren, Lennart},
  editor       = {Mizumoto, Yoshihiko and Morita, Koh-Ichiro and Ohishi, Masatoshi},
  isbn         = {978-1-58381-748-3},
  language     = {eng},
  pages        = {386--389},
  publisher    = {ARRAY(0x951d9f8)},
  series       = {Astronomical Society of the Pacific Conference Series},
  title        = {Implementation of the Global Parameters Determination in Gaia's Astrometric Solution (AGIS)},
  volume       = {434},
  year         = {2010},
}