How do we estimate the surface temperature of a star?
A) By estimating its luminosity
B) By obtaining its spectrum and classifying the spectral type
C) By measuring the Doppler shifts of absorption lines in its chromosphere
D) By estimating its parallax

Question

Quizplus · Accepted Answer

The surface temperature of a star can be estimated by obtaining its spectrum and classifying its spectral type. This method is based on the fact that stars of different temperatures have different spectra, and by studying the features in their spectra, we can determine their surface temperature.

How Do We Estimate the Surface Temperature of a Star