Statements (23)
Predicate | Object |
---|---|
gptkbp:instanceOf |
astronomer
|
gptkbp:associatedWith |
star formation
|
gptkbp:composedOf |
ionized hydrogen
|
gptkbp:contains |
gptkb:plasma
dust young massive stars |
gptkbp:density |
~10-10,000 particles/cm³
|
gptkbp:discoveredBy |
gptkb:William_Huggins
|
gptkbp:emits |
gptkb:H-alpha_radiation
|
gptkbp:example |
gptkb:Orion_Nebula
gptkb:Eagle_Nebula gptkb:Lagoon_Nebula |
gptkbp:foundIn |
galaxies
|
https://www.w3.org/2000/01/rdf-schema#label |
H II Regions
|
gptkbp:ionizedBy |
radiation therapy
|
gptkbp:lifespan |
a few million years
|
gptkbp:role |
galactic chemical evolution
|
gptkbp:size |
few to hundreds of light-years
|
gptkbp:studiedIn |
optical astronomy
radio astronomy |
gptkbp:temperature |
~10,000 K
|
gptkbp:bfsParent |
gptkb:Milky_Way_galaxy
|
gptkbp:bfsLayer |
5
|