The mystery of “supernova-chameleon”

In the new study, scientists have observed an unusual supernova SN 2014C, the appearance of which during the year changed significantly, probably due to the fact that this supernova was dumped in the space of my stuff at the end of the life cycle. Such processes are not characteristic of any one class of supernova, known scientist. To explain these observations, astronomers need to revisit established ideas about the end of life of massive stars.

“This “super chameleon” can serve as an example of a new mechanism by which massive stars spread throughout the Universe are synthesized in their cores of chemical elements,” said Rafaella, Margutti (Raffaella Margutti), assistant Professor of physics and astronomy, northwestern University, USA, and lead author of the new study.

Supernova SN 2014C, discovered in 2014 in a spiral galaxy located at a distance of 36 to 46 million years away, within a few decades or hundreds of years before the explosion threw into space their gas shell, the researchers found. The mass of the discarded material is roughly equivalent to the mass of the Sun. The loss of a star such quantities of hydrogen rich material led to the fact that classificating type supernova changed: if originally the supernova related to type I, after the reset of the shells it came to be attributed to the type II supernova spectra are almost completely absent hydrogen lines.

The explanation for this unusual “premature” dropping a large amount of material star can be either in our lack of understanding of complex nuclear reactions inside a star, or the star that erupted as a supernova SN 2014C, star companion, I think, Margutti and her colleagues.