Assertion: nova's system | /r/HasProperty | dominated by soft lower energy
Facets:
value: below 0.5 kev.
type: OTHER
Source sentences:
text: In addition, X-ray astronomers have discovered a class of objects called the "super-soft sources" (or SSS): the name derived from the X-ray spectrum of these systems, which is dominated by soft (lower energy) X-ray photons, typically below 0.5 keV.