ASTRON 2B03 Lecture Notes - Lecture 8: Event Horizon, Sn 1987A, Neutron Star
10 Apr 2018
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Centre: hydrogen burning followed by helium, when temp is. Once the helium is exhausted, the core collapses, heats up and stars burning carbon. Carbon burning makes sodium, neon and magnesium (use lighter elements to make heavier ones) Iron is at the end of the line for nuclear burning the nal days in the life of a massive star. Gravity nally wins (need to put energy into burning iron which is why it stops at iron, can"t give the energy needed to push back against gravity) star lifetimes. Low mass stars (billions fo yrs), high mass stars (millions of years) Blows up, a nova is a term to describe new stars that appeared in the sky, super describes how bright they are few hundreds of days. What happened? cause the star to get very bright for tens or lomoar cpsd| 2151316. The iron core starts to collapse onto itself reaching speeds of.
