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gptkbp:instanceOf
|
stellar classification
|
|
gptkbp:color
|
blue
|
|
gptkbp:contributedTo
|
ionization of interstellar medium
|
|
gptkbp:endState
|
supernova (for most massive)
white dwarf (for less massive)
|
|
gptkbp:firstCataloguedBy
|
gptkb:Angelo_Secchi
|
|
gptkbp:form
|
from molecular clouds
|
|
gptkbp:frequency
|
rare compared to Sun-like stars
|
|
gptkbp:giant
|
gptkb:B-type_giant
|
|
gptkbp:heliumLines
|
strong
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
B-type stars
|
|
gptkbp:hydrogenLines
|
moderate
|
|
gptkbp:lifespan
|
tens to hundreds of millions of years
|
|
gptkbp:location
|
gptkb:Milky_Way
other galaxies
|
|
gptkbp:luminosity
|
25–30000 times Sun
|
|
gptkbp:mainSequence
|
B-type main-sequence star
|
|
gptkbp:metallicity
|
varied
|
|
gptkbp:notableExample
|
gptkb:Spica
gptkb:Rigel
Vega (borderline A0/B9)
|
|
gptkbp:range
|
2–16 solar masses
|
|
gptkbp:rotationPeriod
|
often rapid
|
|
gptkbp:spectralType
|
B
|
|
gptkbp:stellarWind
|
strong
|
|
gptkbp:subspecies
|
B0 to B9
|
|
gptkbp:supergiant
|
gptkb:B-type_supergiant
|
|
gptkbp:surfaceGravity
|
varies by luminosity class
|
|
gptkbp:temperature
|
10000–30000 K
|
|
gptkbp:UVRadiation
|
high
|
|
gptkbp:進化
|
become supergiants or neutron stars
|
|
gptkbp:bfsParent
|
gptkb:Population_I
gptkb:main_sequence
gptkb:NGC_2244
gptkb:Rosette_Nebula
|
|
gptkbp:bfsLayer
|
6
|