Assertion: nebula's star | /r/CapableOf | collapse to black hole
Facets:
value: directly
type: MANNER
value: without a supernova outburst
type: OTHER
value: with little radiated energy
type: OTHER
value: without producing a visible supernova
type: MANNER
value: with a sub-luminous supernova
type: OTHER
value: with no visible explosion
type: OTHER
value: at low metallicity
type: LOCATION
Source sentences:
text: At low metallicity, many massive stars will collapse directly to a black hole with no visible explosion or a sub-luminous supernova, and a small fraction will produce a pair-instability supernova, but at solar metallicity and above there is expected to be sufficient mass loss before collapse to allow a visible supernova of type Ib or Ic.
text: Interestingly, when even heavier stars collapse to black holes there is little energy release, hence they are not observable as supernovae, but such massive stars are very rare.
text: Type Ia. The collapse may cause violent expulsion of the outer layers of the star resulting in a supernova, or the release of gravitational potential energy may be insufficient and the star may collapse into a black hole or neutron star with little radiated energy.
text: At low metallicity, all stars will reach core collapse with a hydrogen envelope but sufficiently massive stars collapse directly to a black hole without producing a visible supernova.
text: The continued lack of unambiguous detection of progenitors for normal Type Ib and Ic supernovae may be due to most massive stars collapsing directly to a black hole without a supernova outburst.