Approximate analytical description of the high latitude extinction

Abstract

The distribution of visual interstellar extinction $A_V$ has been mapped in selected areas over the Northern sky, using available LAMOST DR5 and Gaia DR2/EDR3 data. $A_V$ was modelled as a barometric function of galactic latitude and distance. The function parameters were then approximated by spherical harmonics. The resulting analytical tridimensional model of the interstellar extinction can be used to predict $A_V$ values for stars with known parallaxes, as well as the total Galactic extinction in a given location in the sky.

18 pages, 33 figures, accepted by EPJ

References in corpus (5)

• The Gaia mission
• An Analysis of the Shapes of Interstellar Extinction Curves. V. The IR-Through-UV Curve Morphology
• The Radial Velocity Experiment (RAVE): Fifth Data Release
• Gaia-2MASS 3D maps of Galactic interstellar dust within 3 kpc
• A 3D extinction map of the Northern Galactic Plane based on IPHAS photometry