期刊
ASTRONOMY & ASTROPHYSICS
卷 409, 期 1, 页码 205-215出版社
E D P SCIENCES
DOI: 10.1051/0004-6361:20031070
关键词
dust, extinction; ISM : structure; Galaxy : structure
A large-scale three-dimensional model of Galactic extinction is presented based on the Galactic dust distribution model of Drimmel & Spergel (2001). The extinction A(V) to any point within the Galactic disk can be quickly deduced using a set of three-dimensional Cartesian grids. Extinctions from the model are compared to empirical extinction measures, including lines-of-sight in and near the Galactic plane using optical and NIR extinction measures; in particular we show how extinction can be derived from NIR color-magnitude diagrams in the Galactic plane to a distance of 8 kiloparsec.
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