Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26a...325..360h&link_type=abstract
Astronomy and Astrophysics, v.325, p.360-366
Astronomy and Astrophysics
Astrophysics
2
Methods: Data Analysis, Methods: Statistical, Techniques: Photometric, Catalogs
Scientific paper
The Tycho catalogue provides astrometric and photometric data for more than 1 million stars. The derivation of the mean magnitudes of stars fainter than about 8mag required a dedicated treatment, in order to take into account the observations that were too faint for providing a measurable signal. This treatment, called "de-censoring", is based on a statistical model permitting to substitute mean values to the missing data. Faint photometric standard stars are used to demonstrate that the de-censoring produces reliable magnitudes and uncertainties.
di Meo T.
Grenon Michel
Grossmann Volkmar
Halbwachs Jean-Louis
Hog Erik
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