Comparison of potential ASKAP HI survey source finders

Details Comparison of potential ASKAP HI survey source finders Comparison of potential ASKAP HI survey source finders

2012-01-19

arxiv.org/abs/1201.3994v1

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

25 pages, 8 figures, accepted for publication in PASA

Scientific paper

The large size of the ASKAP HI surveys DINGO and WALLABY necessitates automated 3D source finding. A performance difference of a few percent corresponds to a significant number of galaxies being detected or undetected. As such, the performance of the automated source finding is of paramount importance to both of these surveys. We have analysed the performance of various source finders to determine which will allow us to meet our survey goals during the DINGO and WALLABY design studies. Here we present a comparison of the performance of five different methods of automated source finding. These source finders are Duchamp, the Gamma-finder, CNHI, a 2D-1D Wavelet Reconstruction and S+C finder, a sigma clipping method. Each source finder was applied on the same three-dimensional data cubes containing (a) point sources with a Gaussian velocity profile and (b) spatially extended model-galaxies with inclinations and rotation profiles. We focus on the completeness and reliability of each algorithm when comparing the performance of the different source finders.

Affiliated with

Also associated with

No associations

Rating

Comparison of potential ASKAP HI survey source finders does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Comparison of potential ASKAP HI survey source finders, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Comparison of potential ASKAP HI survey source finders will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-253805