Top: effective temperature curve vs. pulsational phase for the Cepheid RY Sco as derived using the LDRs method (see text for details). The adopted spectra are the same as in Fig. 1. The Teff estimates derived for each spectrum and its error are plotted as black triangles. The red line shows the spline fit. The numbers plotted on top of the individual measurements show the pulsation phase. Bottom: same as the top, for the surface gravity.
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