Ap and Bp stars are peculiar stars (hence the “p”) of types A and B which show overabundances of some metals, such as strontium, chromium and europium; in addition, larger overabundances are often seen in praseodymium and neodymium. These stars have a much slower rotation than normal for A and B type stars, although some exhibit rotation velocities up to about 100 kilometers per second.
Read more about Ap And Bp Stars: Magnetic Fields, Abundance Spots, Rapidly Oscillating Ap Stars
Famous quotes containing the word stars:
“I have heard the voice of a hound, just before daylight, while the stars were shining, from over the woods and river, far in the horizon, when it sounded as sweet and melodious as an instrument.”
—Henry David Thoreau (1817–1862)