Class: RVTau

Variable Star of RV Tau type

•owl:Thing
        •AstrObject
                •StellarObject
                        •Star
                                •LateTypeStar
                                        •RVTau
                                •SuperGiant
                                        •RVTau
                •VariableObject
                        •PulsatingStar
                                •RVTau

Super Classes

SuperGiant
PulsatingStar
FStar OR GStar OR KStar OR MStar
LateTypeStar

Annotations

misc:descriptionVariables of the RV Tauri type. These are radially pulsating supergiants having spectral types F-G at maximum light and K-M at minimum. The light curves are characterized by the presence of double waves with alternating primary and secondary minima that can vary in depth so that primary minima may become secondary and vice versa. The complete light amplitude may reach 3-4 mag in V. Periods between two adjacent primary minima (usually called formal periods) lie in the range 30-150 days. Two subtypes are recognized: - RV Tauri variables that do not vary in mean magnitude (AC Her); - RV Tauri variables that periodically (with periods from 600 to 1500 days and amplitudes up to 2 mag in V) vary in mean magnitude (DF Cyg, RV Tau).
simbad:namePulsV*RVTau
simbad:shortCodeRV*
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