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Classification of SWIRE sources using density estimation in colour space.
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 (˜0.2), the third distribution contains sources of intermediate redshift (˜0.9), and our fourth distribution contains sources of high redshift (˜1.6).
History
Publication status
- Published
Publisher
Astronomical Society of the Pacific Conference SeriesPublisher URL
Volume
357Presentation Type
- paper
Event name
The Spitzer Space Telescope: New Views of the Cosmos ASP Conference SeriesEvent location
Pasadena, California, USA.Event type
conferenceEvent date
9-12 November, 2004.Department affiliated with
- Physics and Astronomy Publications
Notes
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.277Full text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2012-02-06Usage metrics
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