Census of the Galaxy: Challenges for Photometry and Spectrometry with GAIA: Challenges for Photometry and Spectrometry With Gaia: Proceedings of the Workshop Held in Vilnius, Lithuania on 2-6 July 2001
Vladas Vansevicius, Arunas Kucinskas, Jokubas Sudzius
Springer Science & Business Media, Jun 30, 2002 - Science - 194 pages
Astrometry from space was performed for the first time and with great success by the ESA Hipparcos satellite (1989-93). This mission was designed as an as trometry mission, but the use of a photon counting detector made it possible to produce very important photometric results: the most accurate astronomical pho tometry ever by the main Hipparcos mission in a very broad band of 120000 stars, and the two-colour Tycho-2 photometry of 2.5 million stars. The cornerstone ESA mission GAIA was approved in October 2000 for launch not later than 2012. This mission will use CCDs in time-delayed integration mode instead of the photo-cathode detectors used in Hipparcos. Due to the higher quantum efficiency of the CCDs, simultaneous integration of many stars, and larger tele scope apertures GAIA will utilize the star light a million times more efficiently than Hipparcos, resulting in astrometry and multi-colour photometry for one billion stars. GAIA photometry is crucial for the scientific utilization of the astrometric results, and the photometric data have a high scientific content in themselves.
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2002 Kluwer Academic a/Fe accuracy AGB stars astrometric Astron Astronomy Astrophys Astrophysics Astrophysics and Space bands BaSeL Bridzius calibration catalogue central wavelength Cepheid distances Cepheids clouds color excess Copenhagen University Observatory derived detection determination diagram disk distribution E-mail EB-V effective temperature Fe/H Figure filter focal plane GAIA mission GAIA observations GAIA photometry Galactic Galaxy giants globular clusters Gostauto 12 ground-based Hipparcos indices interstellar extinction JASMINE Kluwer Academic Publishers Knude Kucinskas Lastennet Lejeune Lithuania log g luminosity magnitudes main sequence MBP system measurements metallicity method Munari number of stars objects obtained orbit P-L relation parallaxes photometric system pixel precision procedure radial velocity range reddening tracers reff sample simulations solar Space Science 280 spectral types stellar parameters stellar populations Straizys Stromgren synthetic systematic errors Technical Report Teff telescope type stars versus Vilnius Vilnius University