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Three-dimensional extinction mapping using Gaussian random fields

Published online by Cambridge University Press:  17 July 2015

S.E. Sale
S.E. Sale*
Affiliation:
Rudolf Peierls Centre for Theoretical Physics, Keble Road, Oxford OX1 3NP, UK
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Abstract

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.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 68: The Milky Way Unravelled by Gaia: GREAT Science from the Gaia Data Releases , 2014 , pp. 283 - 286
Copyright
© EAS, EDP Sciences, 2015

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References

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