Statements (16)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:astronomy
|
| gptkbp:characterizedBy |
narrow emission lines
|
| gptkbp:contains |
ionized gas clouds
|
| gptkbp:contrastsWith |
broad-line region
|
| gptkbp:distanceFromNucleus |
hundreds to thousands of parsecs
|
| gptkbp:emits |
forbidden lines
|
| gptkbp:foundIn |
quasars
Seyfert galaxies radio galaxies |
| https://www.w3.org/2000/01/rdf-schema#label |
Narrow-line region
|
| gptkbp:ionizedBy |
central supermassive black hole
|
| gptkbp:partOf |
active galactic nucleus
|
| gptkbp:spectralLineWidth |
less than 1000 km/s
|
| gptkbp:studiedIn |
optical spectroscopy
|
| gptkbp:bfsParent |
gptkb:Active_galactic_nuclei
|
| gptkbp:bfsLayer |
7
|