Error analysis of the photoelectric catalogue
Abstract
The data contained in the Photoelectric Catalogne has been analyzed in order to ascertain the internal consistency of the observations, detect transcribing errors, and detect possible variable stars. Of the 20705 stars in the Catalogne roughly one third have two or more observations. Of these 532 were found to have discordant results in one or more of V, B- V, U-B, or between colour and spectral- luminosity class. Ten per cent of these results were caused by transcribing errors into the catalogne. Sixteen per cent are visual binary stars in which it is difficult to avoid either contamination of loss of light. Twenty-two per cent are reasonable candidates for variability, some of which were previously known. Sixty-eight per cent probably have errors in either the reported photometry (53 %) or in the classification or photometry of the star (150%) The standard deviations from the mean magnitudes and colours for stars of two or more observations (excluding the discordant results) are found to be I 0mO.15,I 0mO.1 1, and I 0mO.16 in V, B- V, and U-B respectively. Tables of the deviations by individual reference number and by spectral class are also shown. Key words: Photoelectric Catalogue - statistical accuracy - variable stars
- Publication:
-
Astronomy and Astrophysics Supplement Series
- Pub Date:
- March 1973
- Bibcode:
- 1973A&AS....9..297F