It should be anti-helium, by the way, assuming the target has a helium core.

The inner core contracted until hydrogen burning commenced in a shell surrounding the helium core.

Hydrogen burning now takes place in a narrow shell surrounding the newly processed helium core.

Meanwhile, the helium core had grown, and steadily contracted, and heated up.

It began life as a hot blue main sequence star, but now is a large cool asymptotic giant branch star with a degenerate helium core.

There's a neutrino migration taking place in the outer hydrogen-reaction zone to the inner helium core of the star.

Its most likely status is as a core-helium fusing giant star, although it could be in transition to gianthood with a tranquil helium core.

The degenerate helium core will keep on contracting, and finally becomes a helium white dwarf.

Instead, for stars of more than 0.4 solar masses, fusion occurs in a slowly expanding shell around the degenerate helium core.

Red dwarf stars with less than 0.4 solar masses are convective throughout, which prevents the accumulation of a helium core.