What remains after a sun-like, low-mass star runs out of fuel and its outer layers drift away?

Answer

A white dwarf

For low-mass stars, the outer layers drift away forming a planetary nebula, leaving behind a hot, Earth-sized stellar cinder called a white dwarf that cools without further nuclear activity.

What remains after a sun-like, low-mass star runs out of fuel and its outer layers drift away?
Elementstarformationnucleosynthesisastrophysic