http://abyss.uoregon.edu/~js/ast122/lectures/lec18.htmlАрхивная копия от 14 февраля 2020 на Wayback Machine «Stars greater than 25 solar masses undergo a more violent end to their lives. Carbon core burning lasts for 600 years for a star of this size. Neon burning for 1 year, oxygen burning about 6 months (i.e. very fast on astronomical timescales)»
http://abyss.uoregon.edu/~js/ast122/lectures/lec18.htmlАрхивная копия от 14 февраля 2020 на Wayback Machine «Stars greater than 25 solar masses undergo a more violent end to their lives. Carbon core burning lasts for 600 years for a star of this size. Neon burning for 1 year, oxygen burning about 6 months (i.e. very fast on astronomical timescales)»