Visual minima timings of eclipsing binaries: To use or not to use?
| Autor: | Mikul����ek, Zden��k, Zejda, Miloslav, Zhu, Liying, Qian, Shen-Bang, Li��ka, Ji����, de Villiers, Stefanus Nicholas |
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| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: | |
| Popis: | Plenty of mid-eclipse timings of short-periodic eclipsing binaries derived from series of visual observations appear to be an acceptable source of information for orbital period analyses, namely if they were done in time-intervals not covered by other types of observations. However, our thorough period analysis of the nearly contact eclipsing binary BS Vulpeculae proves that visually determined timings done in 1979--2003 were undoubtedly biased to accommodate the existing linear ephemeris. The heavily subjective character of visual observations disqualifies them as a source of true phase information apt for fine eclipsing binary period analyses. Consequently we warn against the use of visual timings without a preceding careful verification. 10 pages, 3 figures, written for Central European Astrophysical Bulletin |
| Databáze: | OpenAIRE |
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