Zwicky Transient Facility and Globular Clusters: The Period–Luminosity and Period–Wesenheit Relations for Type II Cepheids
Authors: Chow-Choong Ngeow, Anupam Bhardwaj, Jing-Yi Henderson, Matthew J. Graham, Russ R. Laher, Michael S. Medford, Josiah Purdum, Ben Rusholme
Chow-Choong Ngeow et al
2022 The Astronomical Journal164.
Provider: AAS Journals
Caption: Figure 5.
Slopes of the fitted linear regressions, γ, from the plots for PL residuals vs. [Fe/H] as a function of filters. The red line indicates the case of γ = 0.