Astrophysics (index)

Ap Star

(peculiar type of A star)

An Ap Star is a sub-type of A-Type Star (A), with more than expected of some Metals, such as Strontium, Chromium, Europium, Praseodymium, and Neodymium. Also common are a slow rotation rate and a strong magnetic field.

Bp Stars are analogous B-Type Stars (B).

(star type)