Detailed study of stellar spectra in 1897, which enabled the development of the H-Rdiagram, was performed by:
A)E.C. Pickering.
B)Harlow Shapley.
C)James Lick.
D)John Herschel.
E)Antonia Maury.

Question

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Antonia Maury played a crucial role in analyzing the spectra of stars, developing new spectral classifications, and identifying patterns that led to the development of the Hertzsprung-Russell diagram. Antonia Maury performed the detailed study of stellar spectra in 1897 and contributed to the development of the H-R diagram.

Detailed Study of Stellar Spectra in 1897, Which Enabled the Development