Statements (23)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb: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
|
| gptkbp:ionizedBy |
gptkb: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 |
6
|
| https://www.w3.org/2000/01/rdf-schema#label |
H II Regions
|