| Issue |
EAS Publications Series
Volume 67-68, 2014
The Milky Way Unravelled by Gaia: GREAT Science from the Gaia Data Releases
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|
|---|---|---|
| Page(s) | 283 - 286 | |
| Section | Grand Challenges from Gaia | |
| DOI | https://doi.org/10.1051/eas/1567051 | |
| Published online | 17 July 2015 | |
N.A. Walton, F. Figueras, L. Balaguer-Núñez and C. Soubiran (eds)
EAS Publications Series, 67–68 (2014) 283-286
Three-dimensional extinction mapping using Gaussian random fields
Rudolf Peierls Centre for Theoretical Physics, Keble Road, Oxford OX1 3NP, UK
Disentangling the 3D structure of interstellar extinction is a key requirement for understanding the Galaxy and a crucial step towards taking full advantage of the data Gaia will provide.
We present a scheme for using stellar catalogues to map the three-dimensional distributions of extinction and dust within our Galaxy, employing Gaussian random fields and a simple physical model of the interstellar medium that assumes a Kolmogorov-like power spectrum of turbulent fluctuations. As extinction is modelled as a random field, the spatial resolution of the resulting maps is set naturally by the data available; there is no need to impose any spatial binning.
© EAS, EDP Sciences, 2015