Type Ib supernova
= Type Ib supernova
A <type Ib supernova> is a stripped-envelope event with no strong <hydrogen> lines but identifiable helium features. The hydrogen-poor spectrum does not make it a thermonuclear Type Ia event.
= Type Ib supernova
A <type Ib supernova> is a stripped-envelope event with no strong <hydrogen> lines but identifiable helium features. The hydrogen-poor spectrum does not make it a thermonuclear Type Ia event.