标题： 校正星际消光的影响 显示英文标题

标题： Correcting for the Effects of Interstellar Extinction

摘要： 本文讨论了如何最佳地校正天文学数据以消除银河系星际消光的波长依赖效应。 从红外线到紫外线，消光的主要一般特性得到了回顾，并讨论了观测到的空间变化性质。 展示了银河系中发现的消光特性的巨大范围，尤其是在紫外光谱区域。 幸运的是，消光的波长依赖性有一些严格的限制，以及消光曲线形状与星际环境之间的一些普遍相关性。 这些关系为校正消光效应提供了指导。 讨论了几种去红化策略，并给出了每种方法固有的不确定性的估计。 在附录中，提出了一种从红外线到紫外线的平均银河系消光曲线的波长依赖性的新推导，并给出了这种消光定律如何随参数 R = A(V)/E(B-V) 变化的新的估计。 这些曲线代表了消光的真实单色波长依赖性，因此适用于任何分辨率的红外线-紫外线光度数据的去红化，并可用于推导任何测光系统的消光关系。 显示英文摘要

摘要： This paper addresses the issue of how best to correct astronomical data for the wavelength-dependent effects of Galactic interstellar extinction. The main general features of extinction from the IR through the UV are reviewed, along with the nature of observed spatial variations. The enormous range of extinction properties found in the Galaxy, particularly in the UV spectral region, is illustrated. Fortunately, there are some tight constraints on the wavelength dependence of extinction and some general correlations between extinction curve shape and interstellar environment. These relationships provide some guidance for correcting data for the effects of extinction. Several strategies for dereddening are discussed along with estimates of the uncertainties inherent in each method. In the Appendix, a new derivation of the wavelength dependence of an average Galactic extinction curve from the IR through the UV is presented, along with a new estimate of how this extinction law varies with the parameter R = A(V)/E(B-V). These curves represent the true monochromatic wavelength dependence of extinction and, as such, are suitable for dereddening IR--UV spectrophotometric data of any resolution, and can be used to derive extinction relations for any photometry system.