What information can astronomers find using stellar spectra?

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What information can astronomers find using stellar spectra?

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Spectral lines are very useful in determining magnetic field of the star. Also, through spectral lines, astronomers find it easy to find the element of the star along with temperature and density of that element in the star.

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What information can astronomers find using stellar spectra?

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What information can astronomers find using stellar spectra?

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