Statements (29)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:astronomer
|
| gptkbp:cataloguedIn |
gptkb:Messier_catalog
gptkb:Sharpless_catalog |
| gptkbp:composedOf |
ionized hydrogen
|
| gptkbp:contains |
dust
young stars interstellar gas |
| gptkbp:createdBy |
ultraviolet radiation from young massive stars
|
| gptkbp:density |
low
|
| gptkbp:discoveredBy |
gptkb:William_Huggins
|
| gptkbp:emits |
gptkb:radio_waves
visible light |
| gptkbp:example |
gptkb:Orion_Nebula
gptkb:Eagle_Nebula gptkb:Lagoon_Nebula |
| gptkbp:foundIn |
galaxies
|
| gptkbp:frequency |
forbidden lines of oxygen
hydrogen alpha |
| gptkbp:importantFor |
star formation
|
| gptkbp:lifespan |
a few million years
|
| gptkbp:relatedTo |
supernova remnants
planetary nebulae |
| gptkbp:shape |
irregular
|
| gptkbp:size |
up to hundreds of light-years across
|
| gptkbp:studiedBy |
gptkb:astronomer
|
| gptkbp:temperature |
about 10,000 K
|
| gptkbp:bfsParent |
gptkb:Large_Magellanic_Cloud
|
| gptkbp:bfsLayer |
6
|
| https://www.w3.org/2000/01/rdf-schema#label |
H II regions
|