•Hertzsprung-Russell diagram will appear over and over again in class
•Deviations from patterns useful for understanding evolution of
stars
•
•Equivalent kinds of plots:
•Luminosity vs. Temperature (what we’ve been showing)
•
•Absolute Magnitude
vs. Spectral Type
(the “original” H-R diagram)
•Apparent Magnitude vs. Spectral Type
•Patterns still the same if all stars are at same
difference
•All stars will be shifted vertically by the same
amount:
m-M= -5 + 5
log(d)
•
•Magnitude vs. Color
(called “color-magnitude
diagrams”)