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arXiv · 1203.6052

A new approach to the optimization of the extraction of astrometric and photometric information from multi-wavelength images in cosmological fields

Maria Jose Marquez
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Abstract

This paper describes a new approach to the optimization of information extraction in multi-wavelength image cubes of cosmological fields. The objective is to create a framework for the automatic identification and tagging of sources according to various criteria (isolated source, partially overlapped, fully overlapped, cross-matched, etc) and to set the basis for the automatic production of the SEDs (spectral energy distributions) for all objects detected in the many multi-wavelength images in cosmological fields.In order to do so, a processing pipeline is designed that combines Voronoi tessellation, Bayesian cross-matching, and active contours to create a graph-based representation of the cross-match probabilities. This pipeline produces a set of SEDs with quality tags suitable for the application of already-proven data mining methods. The pipeline briefly described here is also applicable to other astrophysical scenarios such as star forming regions.

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Maria Jose Marquez. 2012-03-27. A new approach to the optimization of the extraction of astrometric and photometric information from multi-wavelength images in cosmological fields. https://doi.org/10.1007/978-1-4614-3323-1_18

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