Beta Cephei
E538669
Beta Cephei is a class of hot, massive B-type pulsating variable stars whose brightness variations are driven by pressure and gravity mode oscillations.
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
B-type variable star
ⓘ
class of variable stars ⓘ pulsating variable star type ⓘ |
| belongsToSpectralClass | B-type ⓘ |
| hasAbbreviation | BCEP NERFINISHED ⓘ |
| hasAlternativeName |
Beta Cep-type variable
ⓘ
Beta Cephei variable NERFINISHED ⓘ β Cep-type variable ⓘ β Cephei variable ⓘ |
| hasDiscoveryCentury | 20th century ⓘ |
| hasEnvironment |
OB associations
NERFINISHED
ⓘ
open clusters ⓘ young stellar populations ⓘ |
| hasLightVariationCause |
non-radial pulsations
ⓘ
radial pulsations ⓘ |
| hasPhotometricBandVariability |
optical
ⓘ
ultraviolet ⓘ |
| hasPrototype | Beta Cephei (star) NERFINISHED ⓘ |
| hasPulsationDriver |
gravity mode oscillations
ⓘ
pressure mode oscillations ⓘ |
| hasPulsationMechanism | kappa mechanism ⓘ |
| hasPulsationModes |
low-order g-modes
ⓘ
low-order p-modes ⓘ |
| hasPulsationPeriodRange | 0.1–0.6 days ⓘ |
| hasTypicalAgeRange | tens of millions of years ⓘ |
| hasTypicalAmplitudeRange | a few hundredths of a magnitude ⓘ |
| hasTypicalEffectiveTemperatureRange | 18,000–30,000 K ⓘ |
| hasTypicalLocationInHRDiagram | near the main-sequence turnoff of massive stars ⓘ |
| hasTypicalLuminosityClass |
III
ⓘ
IV ⓘ V ⓘ |
| hasTypicalMassRange | 7–20 solar masses ⓘ |
| hasTypicalMetallicity | near-solar ⓘ |
| hasTypicalRadialVelocityVariations | tens of km/s ⓘ |
| hasTypicalSpectralType |
B0
ⓘ
B1 ⓘ B2 ⓘ |
| hasTypicalSurfaceGravity | high ⓘ |
| hasVariabilityTimescale | short-period ⓘ |
| hasVariabilityType | pulsating ⓘ |
| isCataloguedIn | General Catalogue of Variable Stars NERFINISHED ⓘ |
| isLocatedIn | upper main sequence ⓘ |
| isNamedAfter | star Beta Cephei ⓘ |
| isObservedIn |
Magellanic Clouds
NERFINISHED
ⓘ
Milky Way NERFINISHED ⓘ |
| isUsedFor |
asteroseismology of massive stars
ⓘ
studying internal structure of B-type stars ⓘ testing stellar opacity calculations ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.