Classification of Star
HELLO!!
Now, we're going to discuss the Classification of Star and we'll see their colors also by knowing their names.
Let's START!
Stars are classified by their spectra and their temperature. There are seven main types of stars. In order of decreasing temperature,
O, B, A, F, G, K, and M.
Spectra means we see coming from stars often contain what look like dark lines at particular colors, which means there is much less light coming from the star at that color than at the nearby colors.
To an easy for remembering these star classification: Oh Be A Fine Guy/Girl, Kiss Me.
Class O
Color: Dark Blue
Temperature (K): 28,000-50,000 K
Spectral Features: Ionized Helium, especially helium
Class B
Color: Blue
Temperature (K): 10,000-28,000 K
Spectral Features: Neutral Helium, Some Hydrogen
Class A
Color: Light Blue
Temperature (K): 7,500-10,000 K
Spectral Features: Strong hydrogen, Some ionized metals
Class F
Color: White
Temperature (K): 6,000-7,500 K
Spectral Features: Hydrogen and Ionized metals, calcium and iron
Class G
Color: Yellow
Temperature (K): 5,000-6,000 K
Spectral Features: Ionized calcium, both neutral and ionized metals
Class K
Color: Orange
Temperature (K): 3,500-5,000 K
Spectral Features: Neutral Metals
Class M
Color: Red
Temperature (K): 2,500-3,500 K
Spectral Features: Ionized atoms, especially helium
That's all. THANK YOU!
References:
http://www.enchantedlearning.com/subjects/astronomy/stars/startypes.shtml
https://i.pinimg.com/originals/2a/10/e6/2a10e6c856a2034d49a5b73605011759.jpg