Which piece of spectral data is necessary to determine the spectral class of a star?

Question

(1 point)
Responses

apparent magnitude
apparent magnitude

temperature
temperature

luminosity
luminosity

absolute magnitude

Answer 1

To determine the spectral class of a star, the necessary piece of spectral data is:

temperature

The spectral class of a star is primarily determined by its temperature, which affects its color and the characteristics of its emitted spectrum.