Preliminary analysis of light curves of the seven carbon stars
| Autoři | |
|---|---|
| Rok publikování | 2003 |
| Druh | Článek v odborném periodiku |
| Časopis / Zdroj | Contributions of the Astronomical Observatory Skalnaté Pleso |
| Fakulta / Pracoviště MU | |
| Citace | |
| Obor | Astronomie a nebeská mechanika, astrofyzika |
| Klíčová slova | AGB stars; carbon stars; individual stars; stellar pulsations; periods; UBV photometry; Hipparcos photometry |
| Popis | We present a preliminary analysis of light curves of the following carbon stars: WZ Cas, VY UMa, Y CVn, RY Dra, T Lyr, HK Lyr and TT Cyg, constructed on the basis of our own BV photoelectric observations done at the Brno Observatory in 1979-94 and Hipparcos observations. The analysis suggests that "semiregular" light curves of all studied stars can be faithfully expressed by a superposition of long-term changes and a set of medium-term harmonic variations (possibly pulsations) with periods from 50 to 500 days. |
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