Journal Article

<span class="smallCaps">duchamp</span>: a 3D source finder for spectral‐line data

Matthew T. Whiting

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 421, issue 4, pages 3242-3256
Published in print April 2012 | ISSN: 0035-8711
Published online April 2012 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2012.20548.x
duchamp: a 3D source finder for spectral‐line data

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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.

Keywords: methods: data analysis; techniques: image processing; surveys

Journal Article.  9860 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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