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gptkbp:instanceOf
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variable star
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gptkbp:alsoKnownAs
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Beta Canis Majoris variables
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gptkbp:category
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gptkb:B-type_stars
variable stars
pulsating stars
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gptkbp:commonIn
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B-type main-sequence stars
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gptkbp:compatibleWith
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gptkb:galaxy
globular clusters
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gptkbp:discoveredBy
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gptkb:Edward_Charles_Pickering
early 20th century
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gptkbp:example
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gptkb:BW_Vulpeculae
gptkb:Beta_Cephei
gptkb:Spica
12 Lacertae
Delta Ceti
V836 Centauri
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gptkbp:foundIn
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galactic disk
young open clusters
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https://www.w3.org/2000/01/rdf-schema#label
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Beta Cephei stars
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gptkbp:location
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gptkb:Milky_Way
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gptkbp:luminosity
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1,000 to 40,000 times solar luminosity
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gptkbp:prototype
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gptkb:Beta_Cephei
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gptkbp:pulsationDriver
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iron opacity bump
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gptkbp:pulsationMechanism
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kappa mechanism
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gptkbp:spectralType
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B0 to B3
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gptkbp:temperature
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18,000 to 30,000 K
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gptkbp:typicalMass
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7 to 20 solar masses
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gptkbp:variabilityAmplitude
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0.01 to 0.3 magnitudes
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gptkbp:variabilityCause
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radial and non-radial pulsations
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gptkbp:variabilityPeriod
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0.1 to 0.6 days
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gptkbp:variant
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pulsating variable
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gptkbp:bfsParent
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gptkb:Beta_Cephei_variable_stars
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gptkbp:bfsLayer
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8
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