DUCHAMP: a 3D source finder for spectral-line data
Abstract
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.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- April 2012
- DOI:
- 10.1111/j.1365-2966.2012.20548.x
- arXiv:
- arXiv:1201.2710
- Bibcode:
- 2012MNRAS.421.3242W
- Keywords:
-
- methods: data analysis;
- techniques: image processing;
- surveys;
- Astrophysics - Instrumentation and Methods for Astrophysics
- E-Print:
- MNRAS, in press. 17 pages, 8 figures