Different �types� of H-R diagrams
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 Magnitudevs. 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�)