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Fig. 2

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Blue-violet region of the LAMOST spectrum of the Ap star Gala DR3 456836605925448448 = LAMOST J021027.46+551700.6 (middle spectrum), compared with two standard star spectra taken from the librl8_225 collection. Some prominent lines and blends relevant to the classification of Ap stars are identified. We note the peculiarly strong Cr II, Sr II, and Eu II features and the weak Ca II K line in the Ap star.

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