Question

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

(1 point)
Responses

temperature
temperature

apparent magnitude
apparent magnitude

absolute magnitude
absolute magnitude

luminosity

Answer 1

To determine the spectral class of a star, the necessary piece of spectral data is **temperature**. The spectral class is primarily based on the star's temperature, which affects its spectral characteristics and the absorption lines observed in its spectrum.