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gptkbp:instanceOf
|
gptkb:planetary_nebula
astronomer
|
|
gptkbp:alternativeName
|
Emission_nebula
H_II_region
Herbig-Haro_object
Herbig–Haro_object
Wolf–Rayet_nebula
bipolar_nebula
bipolar_planetary_nebula
diffuse_nebula
emission_nebula
molecular_cloud
reflection_nebula
star-forming_region
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|
gptkbp:associatedWith
|
white dwarf
young stellar objects
protostars
|
|
gptkbp:canBe
|
gptkb:planetary_nebula
supernova
|
|
gptkbp:cataloguedIn
|
HH objects
HH object
|
|
gptkbp:category
|
gptkb:Titan
gptkb:planetary_nebula
astronomer
|
|
gptkbp:color
|
red
|
|
gptkbp:composedOf
|
ionized gas
jets of gas
|
|
gptkbp:contains
|
heavy elements
interstellar dust
|
|
gptkbp:createdBy
|
stellar wind
mass loss
|
|
gptkbp:discoveredBy
|
gptkb:William_Herschel
gptkb:George_Herbig
gptkb:Guillermo_Haro
gptkb:Charles_Wolf
gptkb:Georges_Rayet
|
|
gptkbp:distance
|
hundreds to thousands of light-years
|
|
gptkbp:distanceFromEarth
|
hundreds to thousands of light-years
|
|
gptkbp:distinctFrom
|
gptkb:Titan
gptkb:planetary_nebula
|
|
gptkbp:does_not_emit
|
its own light
|
|
gptkbp:emits
|
infrared radiation
spectrometer
light
visible light
|
|
gptkbp:emits_light_by
|
scattering starlight
|
|
gptkbp:example
|
gptkb:Orion_Nebula
gptkb:IC_2118
gptkb:NGC_1435
gptkb:NGC_7023
gptkb:HH_111
gptkb:RCW_58
gptkb:HH_34
gptkb:HH_46/47
gptkb:Eagle_Nebula
gptkb:Lagoon_Nebula
gptkb:NGC_6888
gptkb:NGC_2359
|
|
gptkbp:firstObserved
|
1940s
|
|
gptkbp:form
|
ionization of gas by ultraviolet light
jets of gas from protostars
|
|
gptkbp:foundIn
|
gptkb:Milky_Way
other galaxies
star-forming regions
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
planetary nebula
|
|
gptkbp:illuminatedBy
|
nearby stars
nearby hot stars
|
|
gptkbp:interactsWith
|
interstellar medium
|
|
gptkbp:lifespan
|
a few thousand years
|
|
gptkbp:mayInclude
|
gptkb:helium
hydrogen
other elements
|
|
gptkbp:namedAfter
|
gptkb:George_Herbig
gptkb:Guillermo_Haro
|
|
gptkbp:observedBy
|
astronomer
radio telescopes
optical telescopes
infrared telescopes
|
|
gptkbp:often_appears
|
blue
|
|
gptkbp:produces
|
shock waves
|
|
gptkbp:redColorDueTo
|
H-alpha emission
|
|
gptkbp:speed
|
hundreds of kilometers per second
|
|
gptkbp:studiedBy
|
astrophysics
|
|
gptkbp:studiedIn
|
astrophysics
|
|
gptkbp:type
|
gptkb:Titan
|
|
gptkbp:bfsParent
|
gptkb:Messier_45
gptkb:NGC_2070
gptkb:NGC_3242
gptkb:NGC_3918
gptkb:Titan
gptkb:NGC_1432
gptkb:Class_I_protostar
gptkb:Lupus_I
|
|
gptkbp:bfsLayer
|
5
|