Visual Minima Timings of Eclipsing Binaries: To Use or not to Use?
| Autoři | |
|---|---|
| Rok publikování | 2013 |
| Druh | Článek v odborném periodiku |
| Časopis / Zdroj | Central European Astrophysical Bulletin |
| Fakulta / Pracoviště MU | |
| Citace | |
| Obor | Astronomie a nebeská mechanika, astrofyzika |
| Klíčová slova | eclipsing binaries; minima timings |
| 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. |
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