Question

hertzsprung - russell diagram spectral class
o b a f g k m
luminosity (sun = 1)
10^6
10^4
10^2
1
10^(-2)
10^(-4)
blue giants
main sequence stars
white dwarfs
red supergiants
red giants
sun
40,000 20,000 10,000 7,500 5,500 4,500 3,000
temperature (°k)
absolute magnitude
-10
-5
0
5
10
15
in which spectral class does a main sequence star with a temperature of 3,000 kelvin belong?
(1 point)
o g
o k
o m
o f

Explanation:

Step1: Locate temperature on diagram

Find 3000 K on the temperature - axis of the Hertzsprung - Russell diagram.

Step2: Identify spectral class

For a main - sequence star at 3000 K, trace up to the main - sequence line and then find the corresponding spectral class. The spectral class for a main - sequence star at 3000 K is M.

Answer:

M