Class: Alpha2CanumVenaticorum

Variable Star of alpha2 CVn type

•owl:Thing
        •AstrObject
                •StellarObject
                        •Star
                                •Dwarf
                                        •Alpha2CanumVenaticorum
                                •EarlyTypeStar
                                        •Alpha2CanumVenaticorum
                •VariableObject
                        •PulsatingStar
                                •Alpha2CanumVenaticorum
                        •RotationallyVariableObject
                                •Alpha2CanumVenaticorum

Super Classes

PulsatingStar
EarlyTypeStar
Dwarf
hasHighMeasurement SOME MagneticField
BStar OR AStar
RotationallyVariableObject

Annotations

misc:descriptionAlpha2 Canum Venaticorum variables. These are main-sequence stars with spectral types B8p-A7p and displaying strong magnetic fields. Spectra show abnormally strong lines of Si, Sr, Cr, and rare earths whose intensities vary with rotation. They exhibit magnetic field and brightness changes (periods of 0.5-160 days or more). The amplitudes of the brightness changes are usually withine 0.01-0.1 mag in V. Sub-type: - Rapidly oscillating Alpha2 CVn variables. These are nonradially pulsating, rotating magnetic variables of Ap spectral type (DO Eri). Pulsation periods are in the range of 6-12 mmag (0.004-0.01 days), while amplitudes of light variation caused by the pulsation are about 0.01 mag in V. The pulsational variations are superposed on those caused by rotation.
simbad:nameRotV*alf2CVn
simbad:shortCodea2*
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