Oxygen-neon-magnesium core
= Oxygen-neon-magnesium core
{title2=$\mathrm{O/Ne/Mg}$ core}
An oxygen-neon-magnesium core is the degenerate product of carbon burning, composed mainly of oxygen and neon with a smaller magnesium abundance. It can become an oxygen-neon white dwarf or collapse after electron captures if it approaches the <Chandrasekhar mass>.