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High spatial resolution Galactic 3D extinction mapping with IPHAS

Published online by Cambridge University Press:  21 October 2010

S. E. Sale  and
J. E. Drew
S. E. Sale
Affiliation:
Astrophysics Group, Imperial College London, Blackett Laboratory, Prince Consort Road, London SW7 2AZ, U.K. email: s.sale06@imperial.ac.uk
J. E. Drew
Affiliation:
Centre for Astrophysics Research, STRI, University of Hertfordshire, College Lane Campus, Hatfield, AL10 9AB, U.K.
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Abstract

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An algorithm, MEAD, is presented, which can map extinction in three dimensions, with fine distance and angular resolutions. MEAD is then employed when studying the structure of the outer Galaxy. We show that the Galaxy's radial density profile takes the form of a broken exponential, with density dropping off more steeply beyond a Galacto-centric radius of ~13 kpc.

Keywords

surveysGalaxy: diskGalaxy: structureGalaxy: stellar contentISM: dustextinctionISM: structure
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Highlights H15: Highlights of Astronomy , November 2009 , pp. 785
Copyright
Copyright © International Astronomical Union 2010