Query : 2004A&A...416..391L

2004A&A...416..391L - Astronomy and Astrophysics, volume 416, 391-401 (2004/3-2)

Automatic detection of arcs and arclets formed by gravitational lensing.


Abstract (from CDS):

We present an algorithm developed particularly to detect gravitationally lensed arcs in clusters of galaxies. This algorithm is suited for automated surveys as well as individual arc detections. New methods are used for image smoothing and source detection. The smoothing is performed by so-called anisotropic diffusion, which maintains the shape of the arcs and does not disperse them. The algorithm is much more efficient in detecting arcs than other source finding algorithms and the detection by eye.

Abstract Copyright:

Journal keyword(s): methods: data analysis - techniques: image processing - galaxies: clusters: general - gravitational lensing

CDS comments: Objects in Fig.12 and Table 1 are not identified, they are not in SIMBAD.

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
1 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1094 0
2 ClG J1347-1145 ClG 13 47 33.5 -11 45 42           ~ 523 0

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