Which two fundamental parameters are MOST often used to place a particular star on a path of stellar evolution for comparison with theoretical models?
A) apparent magnitude and distance
B) apparent magnitude and temperature
C) luminosity, or total energy output, and distance
D) luminosity, or total energy output, and temperature

Question

Quizplus · Accepted Answer

Luminosity and temperature are the two fundamental parameters most often used to place a star on a path of stellar evolution for comparison with theoretical models. Luminosity indicates how much energy a star emits, and temperature gives information about the star's surface conditions. Together, they help astronomers determine a star's position on the Hertzsprung-Russell diagram, a key tool in understanding stellar evolution.

Which Two Fundamental Parameters Are MOST Often Used to Place