|
gptkbp:instanceOf
|
stellar classification
|
|
gptkbp:apparentMagnitude
|
up to -6
|
|
gptkbp:color
|
blue
|
|
gptkbp:contributedTo
|
galactic chemical enrichment
|
|
gptkbp:discoveredBy
|
gptkb:Angelo_Secchi_(classification_system)
|
|
gptkbp:emits
|
radiation therapy
strong stellar winds
|
|
gptkbp:endState
|
white dwarf
supernova
black hole
|
|
gptkbp:evolutionaryStage
|
massive star
|
|
gptkbp:firstCataloguedBy
|
late 19th century
|
|
gptkbp:foundIn
|
gptkb:OB_associations
open clusters
|
|
gptkbp:fractionOfAllStars
|
<0.00003%
|
|
gptkbp:frequency
|
He II, ionized nitrogen, ionized oxygen
|
|
gptkbp:giantDesignation
|
gptkb:O_III
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
O-type stars
|
|
gptkbp:ionizeSurroundings
|
yes
|
|
gptkbp:lifespan
|
~3–10 million years
|
|
gptkbp:location
|
star-forming regions
spiral arms of galaxies
|
|
gptkbp:luminosity
|
up to 1,000,000 times Sun
|
|
gptkbp:mainSequenceDesignation
|
gptkb:O_V
|
|
gptkbp:mainSequenceExample
|
gptkb:Theta1_Orionis_C
gptkb:Zeta_Puppis
|
|
gptkbp:metallicity
|
varies
|
|
gptkbp:range
|
15–90 solar masses
|
|
gptkbp:rareIn
|
yes
|
|
gptkbp:rotationPeriod
|
gptkb:fire
|
|
gptkbp:spectralType
|
O
|
|
gptkbp:supergiantDesignation
|
gptkb:O_I
|
|
gptkbp:supergiantExample
|
gptkb:HD_93129A
|
|
gptkbp:surfaceGravity
|
high
|
|
gptkbp:temperature
|
30000–52000 K
|
|
gptkbp:triggeredBy
|
star formation in nearby clouds
|
|
gptkbp:bfsParent
|
gptkb:Population_I
gptkb:main_sequence
gptkb:IC_1805
gptkb:NGC_2244
|
|
gptkbp:bfsLayer
|
6
|