Abstract
Gaia will obtain multi-color photometry for astrometric and astrophysical purposes. A photometry in five broad bands and with high angular resolution will be obtained after every astrometric observation of a star, especially for the sake of correcting slight astrometric chromaticity errors of the optical system. A separate smaller telescope will obtain photometry in eleven passbands of medium width designed to serve the astrophysical analysis of the mission results. The medium-band photometry (MBP) has less angular resolution, but much longer effective integration time than the broad-band photometry (BBP).
References
Bienayme O., Turon C. (eds.) 2002, Gaia: a European Space Project, Proc. Summer School held in Les Houches, France, EAS Publ. Ser., vol. 2Search in Google Scholar
ESA 1997, The Hipparcos and Tycho Catalogues, ESA SP-1200Search in Google Scholar
ESA 2003, Gaia mission: http://astro.estec.esa.nl/GAIA/Search in Google Scholar
Høg E. 2002, in: Gaia: a European Space Project, Proc. Summer School held in Les Houches, France, eds. O. Bienayme & C. Turon, EAS Publ. Ser., vol. 2, p. 27Search in Google Scholar
Knude J., Fabricius C. 2003, Baltic Astronomy, 12, 508 (these proceedings)10.1515/astro-2017-0073Search in Google Scholar
Munari U. (ed.) 2003, Gaia Spectroscopy, Science and Technology, ASP Conf. Ser., vol. 298Search in Google Scholar
PWG 2003, Gaia PhotometryWorking Group: http://gaia.am.ub.es/PWG/Search in Google Scholar
Vansevičius V., Kučinskas A., Sūdžius J. (eds.) 2002, Census of the Galaxy: Challenges for Photometry and Spectrometry with Gaia, Proc. of the Workshop held in Vilnius, Lithuania; Ap&SS, 280, nos. 1-210.1007/978-94-010-0361-2Search in Google Scholar
© 2017
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
