PX158 - I6d - stars by masses

the final state depends on the mass

1

$M < 0.08 M_{⊙} :$ brown dwarfs
cannot fuse $^{1} H$
some $^{2} H$ (deuterium) fusion can occur
the heat they contain is mainly from formation
discovered using similar methods of detection of exoplanets

2

$0.08 M_{⊙} < M < 0.8 M_{⊙}$
$H$ fusion
low luminosity
lifetime $>$ age of the universe

3

$0.8 M_{⊙} < M < 5 M_{⊙}$
$H$ fusion
lifetime $\sim$ lifetime $_{⊙}$
end product is a white dwarf
$A, F, G, K$ stars

4

$5 M_{⊙} < M < 25 M_{⊙}$
end product is a neutron star

5

$25 M_{⊙} \leq M$
end product is a blackhole