The Hertzsprung-Russell diagram

Question 1

what is the range of temperatures and the units for temperature

Answer 1

2500-50,000 Kelvin

Question 2

draw the spectral classes, color and spectra table with the temp and prominent absorption lines.

Answer 2

Spectral classes: O,B,A,F,G,K,M

Intrinsic color: blue, blue, blue-white, white, white-yellow, orange, red.

Temperature (K): 50,000-25,000/25,000-11,000/11,000-7500/7500-6000/6000-5000/5000-35000/<3500

absorption lines: He+, He, H/He, H/H(strongest),ionized metals/ionized metals & neutral metals/neutral metals/neutral atoms, TiO.

Question 3

draw a HR diagram

Answer 3

At top: O, B, A, F, G, K, M.
At right: L/L☉, 1 in the middle right
Bottom: Temp/K, 2500 on right, 50,000 left, 5700 in line with sun
Left: M at bottom +15, in middle +5, at top -10
White dwarf - bottom left
supergiants - top middle - between B and K/M
Red giants - underneath supergiants under G,K,M
Main sequence - slight s shape going through diagonal.
(can also look it up)