Parameters of the JHK light curves for classical cepheids and the interstellar extinction lawстатья
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Аннотация:Based on published infrared observations of Cepheids, we have compiled a homogeneous catalog
of parameters of their light curves in the JHK bands of the CIT system. This catalog is used to determine the total-to-selective extinction ratio R = A / E(BV) in UBVRI. The derived ratio in V, RV = 3.26+/-0.03, exceeds the corresponding value for blue supergiants by only a slight amount, casting doubt on the conclusions reached by a number of authors that RV depends strongly on stellar spectral type.