CO line emission
type: Concept
broader: Interstellar line emission

Interstellar line emission
scope note: For interstellar emission lines, besides H1 and CO, use this concept.
broader: Interstellar emissions
narrower: H I line emission
narrower: CO line emission
type: Concept

Interstellar emissions
type: Concept
narrower: Interstellar line emission

H I line emission
type: Concept
broader: Interstellar line emission