13
Classification
of stars
•O B
A F G K M scheme
–Originally in order of H strength – A,B,etc Above order is for decreasing temperature
–Standard mnemonic: Oh, Be A Fine Girl (Guy), Kiss Me
–Use numbers for finer divisions: A0, A1, ... A9, F0, F1, ... F9, G0, G1, ...
From our text: Horizons, by Seeds
