Assertion: supernova's spectrum | /r/HasProperty | dominated by heavy elements
Facets:
value: months after the explosion
type: TEMPORAL
Source sentences:
text: Months after the explosion, when the outer layers have expanded to the point of transparency, the spectrum is dominated by light emitted by material near the core of the star, heavy elements synthesized during the explosion; most prominently isotopes close to the mass of iron (iron-peak elements).
text: Months after the explosion, when the outer layers have expanded to the point of transparency, the spectrum is dominated by light emitted by material near the core of the star, heavy elements synthesized during the explosion, most prominently iron-group elements.