Figure 7 from Excalibur: A Nonparametric, Hierarchical Wavelength Calibration Method for a Precision Spectrograph

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Excalibur: A Nonparametric, Hierarchical Wavelength Calibration Method for a Precision Spectrograph

Authors: Lily L. Zhao, David W. Hogg, Megan Bedell, and Debra A. Fischer

2021 The Astronomical Journal 161 80.

Provider: AAS Journals

Caption: Figure 7.

Per-line rms of returned wavelength models for different values of K. The per-line rms, as defined in Equation (5), provides a measure of the accuracy of a wavelength model. There is a dotted vertical line at K = 6, and the dotted horizontal line is the rms for K = 6. The improvement around K = 6 plateaus.

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