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, who had heard of music in the spheres,
But not of speech in stars, began to muse:
But turning to my God, whose ministers
The stars and all things are; If I refuse,
Dread Lord, said I, so oft my good;
Then I refuse not ev’n with blood
To wash away my stubborn thought:
For I will do or suffer what I ought.”
—George Herbert (1593–1633)