Assertion: nebula's star | /r/Synonym | wolf-rayet stars
Facets:
Source sentences:
text: These spectra are indistinguishable from those from the very bright rare stars known as Wolf-Rayet stars, but the planetary nuclei are about 100 times fainter than true Wolf-Rayet objects.
text: These stars are known as Wolf–Rayet stars, and they occur at moderate to high metallicity where continuum driven winds cause sufficiently high mass loss rates.
text: Known as a Wolf-Rayet star, the central star is an extremely hot giant thought to be in a brief, pre- supernova stage of evolution.
text: The second component is an extremely rare example of hot star known as a Wolf–Rayet star, and is the brightest example in the sky.