Luminous blue variable

URI: https://gptkb.org/entity/Luminous_blue_variable

GPTKB entity

AI-created image

Predicate	Object
gptkbp:instanceOf	gptkb:Type_of_star
gptkbp:alsoKnownAs	gptkb:LBV
gptkbp:associatedWith	gptkb:OB_associations Young star clusters
gptkbp:color	Blue
gptkbp:discoveredBy	gptkb:Hubble_and_Sandage 1950s
gptkbp:distance	Several kiloparsecs
gptkbp:endStage	gptkb:supernova
gptkbp:evolutionaryLink	gptkb:white_dwarf Supergiant
gptkbp:evolutionaryStage	Post-main-sequence
gptkbp:hasInfraredExcess	Yes
gptkbp:heliumLines	Present
gptkbp:hostedBy	gptkb:Milky_Way gptkb:Large_Magellanic_Cloud gptkb:Small_Magellanic_Cloud
gptkbp:hydrogenLines	Strong emission
gptkbp:importantFor	Key to understanding massive star evolution
gptkbp:location	Massive star-forming regions
gptkbp:luminosity	I Up to several million times the Sun
gptkbp:mass	20-120 solar masses
gptkbp:massLoss	Very high
gptkbp:massLossMechanism	Stellar wind
gptkbp:metalLines	Present
gptkbp:nebulae	Often surrounded by nebulae
gptkbp:notableExample	gptkb:P_Cygni gptkb:AG_Carinae gptkb:Eta_Carinae gptkb:HR_Carinae gptkb:S_Doradus
gptkbp:outburst	Giant eruptions S Doradus variability
gptkbp:spectralType	O B
gptkbp:surfaceInstability	Yes
gptkbp:temperature	10,000–25,000 K
gptkbp:variabilityAmplitude	Up to 2 magnitudes
gptkbp:variabilityTimescale	Years to decades
gptkbp:variant	Eruptive variable
gptkbp:bfsParent	gptkb:Stars
gptkbp:bfsLayer	5
https://www.w3.org/2000/01/rdf-schema#label	Luminous blue variable