Question

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

(1 point)
Responses

luminosity
luminosity

temperature
temperature

absolute magnitude
absolute magnitude

apparent 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 based on its temperature, which affects the star's spectrum and the types of absorption lines present.