8620 DIB equivalent width and extinction

The young stellar cluster Westerlund 1 (Wd 1: l=339.6, b=-0.4) is one of the most massive in the local Universe, but accurate parameters are pending on better determination of...年轻恒星团韦斯特伦德1号（Westerlund 1，简称Wd 1：银经l=339.6，银纬b=-0.4）是本地宇宙中质量最大的天体之一，但其精确参数仍有待通过更精准的测定来确定……