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gptkbp:instance_of
|
gptkb:star
|
|
gptkbp:associated_with
|
spectral type B
|
|
gptkbp:average_temperature
|
around 20,000 K
|
|
gptkbp:brightness_range
|
magnitude 3.0 to 4.0
|
|
gptkbp:can_be_found_in
|
open clusters
|
|
gptkbp:characteristic
|
periodic brightness variations
|
|
gptkbp:contributes_to
|
understanding of stellar dynamics
|
|
gptkbp:discovered_by
|
gptkb:Hermann_von_Helmholtz
|
|
gptkbp:example
|
gptkb:Beta_Cephei
|
|
gptkbp:exhibits
|
irregularities in brightness
|
|
gptkbp:first_appearance
|
gptkb:20th_century
|
|
gptkbp:has_luminosity
|
supergiant or giant stars
|
|
gptkbp:has_variations
|
due to pulsations in the star's outer layers
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Beta Cephei variable
|
|
gptkbp:is_essential_for
|
stellar evolution studies
|
|
gptkbp:is_found_in
|
gptkb:Milky_Way_galaxy
|
|
gptkbp:is_observed_in
|
various wavelengths
|
|
gptkbp:is_studied_in
|
astrophysics
|
|
gptkbp:mass
|
greater than the Sun
|
|
gptkbp:notable_examples
|
gptkb:Beta_Centauri
|
|
gptkbp:pulsation_period
|
a few hours
|
|
gptkbp:related_to
|
gptkb:Cepheid_variables
|
|
gptkbp:type
|
pulsating variable star
|
|
gptkbp:used_in
|
distance measurement in astronomy
|
|
gptkbp:bfsParent
|
gptkb:Gamma_Cassiopeiae
gptkb:Beta_Cephei
|
|
gptkbp:bfsLayer
|
6
|