EAS Publications Series
Volume 67-68, 2014The Milky Way Unravelled by Gaia: GREAT Science from the Gaia Data Releases
|Page(s)||283 - 286|
|Section||Grand Challenges from Gaia|
|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