Alpha2 Canum Venaticorum variables

URI: https://gptkb.org/entity/Alpha2_Canum_Venaticorum_variables
GPTKB entity
Statements (28)
Predicate Object
gptkbp:instanceOf variable star type
gptkbp:alsoKnownAs α2 CVn variables
gptkbp:cataloguedIn gptkb:General_Catalogue_of_Variable_Stars
gptkbp:discoveredBy gptkb:Friedrich_Wilhelm_Argelander
gptkbp:example gptkb:Alpha2_Canum_Venaticorum
gptkb:HD_125248
gptkb:HD_65339
gptkb:HD_137909
gptkbp:foundIn gptkb:Milky_Way
gptkbp:hasLighting 0.01 to 0.1 magnitudes
https://www.w3.org/2000/01/rdf-schema#label Alpha2 Canum Venaticorum variables
gptkbp:lightCurveShape sinusoidal
gptkbp:magneticFieldStrength hundreds to thousands of gauss
strong, stable, global field
gptkbp:namedAfter gptkb:Alpha2_Canum_Venaticorum
gptkbp:observedBy space telescopes
ground-based telescopes
gptkbp:rotationPeriodEqualsVariabilityPeriod true
gptkbp:spectralType B8p to A7p
gptkbp:starClass chemically peculiar stars
gptkbp:typicalElementAbundance gptkb:strontium
rare earth elements
silicon
chromium
gptkbp:variabilityCause magnetic field and chemical abundance patches
gptkbp:variabilityPeriod 0.5 to 160 days
gptkbp:bfsParent gptkb:Ap_stars
gptkbp:bfsLayer 8