Question

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

(1 point)
Responses

absolute magnitude
absolute magnitude

temperature
temperature

luminosity
luminosity

apparent magnitude

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 effective temperature, which influences its spectrum and the absorption lines observed.