Figure 12 from An Empirical Template Library for FGK and Late-type A Stars Using LAMOST Observed Spectra

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An Empirical Template Library for FGK and Late-type A Stars Using LAMOST Observed Spectra

Authors: Bing Du, A-Li Luo, F. Zuo, Z-R. Bai, R. Wang, Y-H. Song, W. Hou, Y-B. Li, J-N. Zhang, Y-X. Guo, J-J. Chen, M-X. Wang, Y-F. Wang, X. Kong, K-F. Wu, X. Wang, Y. Wu, Y.-H Hou, and Y-H. Zhao

2019 The Astrophysical Journal Supplement Series 240 10.

Provider: AAS Journals

Caption: Figure 12.

Examples of the fitting process of the dense spline interpolations for Ca II K, Ca II H, Hγ (upper panel), Na I, and Hα lines (lower panel), where H_g for Hγ and H_a for Hα. The smooth red curves are the results of the dense spline interpolations, and the black asterisks are the fitted center wavelengths of the lines. For K-type stars, shown in purple, we did not fit Ca II K, Ca II H, Hγ, and Hα lines, owing to their weaknesses.

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