Classification of SWIRE Sources using Density Estimation in Colour Space.

Davoodi, P, Oliver, S and Savage, RS (2006) Classification of SWIRE Sources using Density Estimation in Colour Space. In: The Spitzer Space Telescope: New Views of the Cosmos ASP Conference Series, 9-12 November, 2004., Pasadena, California, USA..

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Abstract

We estimate the Probability Density Functions (PDFs) describing the N-dimensional mid-infrared colour (and optical photometric redshift) distributions of the galaxy populations in the Validation Field of the Spitzer Wide-area Infrared Extragalactic Legacy survey (SWIRE) located in the Lockman Hole.

For sources with detections in all four of the IRAC bands, we identify Gaussian distributions, using 3 colours and an independently derived photometric redshift (zph). We then classify the sources by assigning them to the distribution to which they are most likely to belong. We find two of our distributions contain sources of low redshift (<zph>≈0.2), the third distribution contains sources of intermediate redshift (<zph>≈0.9), and our fourth distribution contains sources of high redshift (<zph>≈1.6).

Item Type: Conference or Workshop Item (Paper)
Additional Information: The Spitzer Space Telescope: New Views of the Cosmos ASP Conference Series, Volume 357, proceedings of the conference held 9-12 November, 2004 in Pasadena, California, USA. Edited by L. Armus and W.T. Reach. San Francisco: Astronomical Society of the Pacific, 2006., p.277
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Depositing User: Seb Oliver
Date Deposited: 06 Feb 2012 20:13
Last Modified: 29 Mar 2012 11:25
URI: http://sro.sussex.ac.uk/id/eprint/24810
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