On the two-dimensional maps of the distribution of interstellar extinction

Abstract

A modified version of the method for determining the mean interstellar extinction and constructing the maps of its distribution based on JHK s photometry is proposed. The extinction for each star of the sample is estimated from the Q -index by linearly approximating the line of unreddened stars on the QJHK - (J - H) diagram. The J -band extinction can be calculated by the equation AJ = 2.68 [(J - H) + 0.03 - 1.18 QJHK]. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.