Question

Which of the following is/are used to classify a star based on its temperature and luminosity?

A. Line spectra
B. Blackbody spectrum
C. Parallax measurements
D. Hertzsprung-Russell diagram

Answer 1

Answer: Hertzsprung-Russell diagram.

Step-by-step explanation:

Answer 2

D. Hertzsprung-Russell Diagram

Step-by-step explanation:

The Hertzspring-Russel Diagram or HR-Diagram is used to study the evolution of stars. It plots stars depending on the temperature against luminosity. Stars go through different changes depending on its mass at the beginning. These changes occurs in stages and each stage is marked by a change in temperature and luminosity.