Multiple Choice
The surface temperature of a nearby star can be determined most precisely by measuring what parameters?
A) the position of the star on the H-R diagram
B) the Doppler shift of the star's spectral lines
C) the relative strengths of emission lines from different atoms and ions in the star's spectrum
D) the relative strengths of absorption lines from different atoms (e.g., H, Ca) and molecules (e.g., TiO) in the star's spectrum
Correct Answer:
Verified
Correct Answer:
Verified
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