Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 421, Issue 4, Pages 3242-3256Publisher
OXFORD UNIV PRESS
DOI: 10.1111/j.1365-2966.2012.20548.x
Keywords
methods: data analysis; techniques: image processing; surveys
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Funding
- NCI National Facility at the ANU
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This paper describes the duchamp source finder, a piece of software designed to find and describe sources in three-dimensional, spectral-line data cubes. duchamp has been developed with H i (neutral hydrogen) observations in mind, but is widely applicable to many types of astronomical images. It features efficient source detection and handling methods, noise suppression via smoothing or multi-resolution wavelet reconstruction, and a range of graphical and text-based outputs to allow the user to understand the detections. This paper details some of the key algorithms used and illustrates the effectiveness of the finder on different data sets.
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