Three-dimensional Structure of the Milky Way Disk: The Distribution of Stars and Dust beyond 0.35 R☉

  title={Three-dimensional Structure of the Milky Way Disk: The Distribution of Stars and Dust beyond 0.35 R☉},
  author={Ronald Drimmel and David N. Spergel},
  journal={The Astrophysical Journal},
We present a three-dimensional model for the Milky Way fitted to the far-infrared (FIR) and near-infrared (NIR) data from the COBE/DIRBE instrument for Galactic latitudes |b| < 30° and to within 20° of the Galactic center. Because of the low optical depth at 240 μm, the FIR emission traces the distribution of Galactic dust in the Galaxy. We model the dust distribution as due to three components: a warped exponential disk with scale length 0.28 R☉ and a flaring scale height, a spiral arm… Expand

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