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Anotace knihy

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.

Parametry knihy

Zařazení knihy Knihy v angličtině Mathematics & science Astronomy, space & time Astronomical observation: observatories, equipment & methods

• Plný název: Census of the Galaxy: Challenges for Photometry and Spectrometry with GAIA
• Podnázev: Proceedings of the Workshop held in Vilnius, Lithuania 2-6 July 2001
• Autor: Vladas Vansevicius, Arunas Kucinskas, Jokubas Sudzius
• Jazyk: Angličtina
• Vazba: Pevná
• Počet stran: 194
• EAN: 9781402005961
• ISBN: 1402005962
• ID: 02716662
• Nakladatelství: Springer-Verlag New York Inc.
• Hmotnost: 1040 g
• Rozměry: 235 × 155 × 16 mm
• Datum vydání: 30. June 2002

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