Tomaž Zwitter: HD 74438, a quadruple star which may be on its path toward a supernova explosion
HD 74438, a quadruple star which may be on its path toward a supernova explosion
prof. Tomaž Zwitter (UL FMF)
Binary stars are quite frequent, but we know only a handful of quadruples. In a recent paper we discuss a quadruple system composed of very young stars in tight orbits. Their mutual gravitational interactions may lead to stellar mergers resulting in a supernova explosion of type Ia. This new evolutionary channel is a promising way to form this type of supernovae which serve as standard candles for distance measurements.