MIR extinction toward Cyg OB2-12 ISM

The sight line toward the luminous blue hypergiant CygOB2-12 is widely used to study interstellar dust on account of its large extinction (AV~10mag) and the fact that this...朝向蓝特超巨星（luminous blue hypergiant）CygOB2-12的视线方向，因其显著的星际消光（AV≈10星等）以及该天体的相关事实（原文未完整给出后续内容），被广泛应用于星际尘埃的研究。