Stars!

2. Centauri Main Sequence system with stars similar in temperature and luminosity to the Sun.
5. An orange Giant star with a surface temperature around 4000 K.
9. Stellar classification based on surface temperature ranging from O to M.
13. Color associated with stars like our Sun having surface temperatures near 6000 K.
14. Color of the hottest stars on the diagram with surface temperatures exceeding 20,000 K.
15. Sequence Primary diagonal band of stars running across the H-R diagram.
16. A luminous red supergiant with a low surface temperature near 3000 K.
17. Solar Radius Standard unit of stellar size comparison equal to the Sun's radius.
18. Our G-type Main Sequence star with a luminosity of 1 and temperature near 6000 K.
19. Color of the coolest stars on the diagram with surface temperatures around 2000 K to 3500 K.

1. Group of luminous evolved stars located above the Main Sequence.
3. Diagram Plotting tool showing the relationship between stellar luminosity and surface temperature.
4. B A faint White Dwarf companion star with low luminosity and high surface temperature.
6. The hottest spectral category of stars with surface temperatures above 30,000 K.
7. 359 A small, dim M-type Main Sequence star with very low luminosity.
8. A bright red supergiant located in Orion with a surface temperature around 3000 K.
10. Measure of total energy emitted by a star relative to the Sun.
11. A blue Main Sequence star with a Class B spectral type and high luminosity.
12. Spectral category for stars with surface temperatures between 6000 K and 7500 K.