Astro 5 Hertzsprung-Russell Diagram Final Review

 

Make sure you know the various important regions of an HR diagram, that you understand how parameters like stellar luminosity, temperature, radius, main sequence masses, and main sequence lifetimes can be indicated on the diagram.

 

Make sure you understand how the spectral types relate to temperature (as in the table below), and how the main sequence masses (in the table below) relate to main sequence spectral types.

 

O

B

A

F

G

K

M

35000K

20000K

9000K

7000K

5800K

4500K

3200K

60M8

10M8

2M8

1.4M8

1M8

0.7M8

0.3M8