Interstellar Reddening in the Solar Neighborhood

位于巴吞鲁日的路易斯安那州立大学的佩里博士发起了一项观测计划，该计划的主要目标是对太阳附近星际介质中的尘埃成分进行高分辨率的三维调查。这些结果将完成对太阳附近星际变红的空间分布的覆盖，因为北半球恒星的类似数据已经被分析过。虽然宇宙尘埃可能只占星际介质的百分之一，但它的存在对天文观测有着显著的影响，因为它是一种波长依赖于恒星辐射的吸收剂。因此，在许多天文学研究中，在空间的任何方向和与太阳的不同距离上对这种变红效应进行校正是必要的。佩里博士的目标是提供可靠的信息，以便天文学家对变红进行修正。

Dr. Perry at Louisiana State University in Baton Rouge, has initiated an observational program which has as its primary goal a high resolution, three dimensional survey of the dust component of the interstellar medium in the neighborhood of the Sun. The results will complete the coverage of the spatial distribution of the interstellar reddening in the solar neighborhood, as similar data for stars in the Northern Hemisphere have already been analyzed. Although cosmic dust may comprise only one percent of the interstellar medium, its presence has a pronounced effect on astronomical observations because it is a wavelength dependent absorber of radiation from stars. It is essential, therefore, in many astronomical studies to correct for this reddening effect for any direction in space and at various distances from the Sun. Dr. Perry's aim is to provide reliable information on which astronomers can make a reddening correction.