End In Fire
The supernova in the Large Magellanic Cloud
Paul Murdin, Cambridge University Press, 1990
About SN1987A, a.k.a. Sk-69 202 in the Large Magellanic Cloud, which University of Toronto astronomer Ian Shelton first observed 1987 February 27 with the 24 inch telescope at the Las Campanas Observatory in Chile.
- about 20 M⊙
page 71: Timeline for SN1987A (need observed aftermath)
Observed time |
epoch |
status of star |
20 million years ago |
Miocene |
star formed, burned hydrogen for some 15 million years |
3 million years ago |
end of Pliocene |
began burning helium (in core) |
20 thousand years ago |
Lascaux |
began burning carbon (in core) |
1980 |
|
began burning neon and oxygen (in core) |
1987 Feb 20 |
|
began burning silicon, producing an iron core |
1987 Feb 23 7:35 UT |
|
explosion |