Spectral classification determines a nearby star's surface temperature by examining the
A) peak wavelength of the star spectrum.
B) relative intensities of light measured through different wavelength band filters.
C) pattern of spectral "absorption" lines from various atoms.
D) the overall shape of the star's spectrum compared to a black body.

Question

Quizplus · Accepted Answer

Spectral classification involves identifying the pattern of spectral "absorption" lines in a star's spectrum. These lines are caused by different elements absorbing specific wavelengths of light, and their pattern can be used to determine the temperature, composition, and other properties of the star's atmosphere.

Spectral Classification Determines a Nearby Star's Surface Temperature by Examining