Detection of Intra-Cluster Diffuse Light: presenting DAWIS

We present our new wavelet package, DAWIS, developped to detect intra-cluster light (ICL), the optical diffuse component of galaxy clusters. We use it to investigate the properties of a massive galaxy cluster at z∼0.5, MACS~J0717.5+3745, and of its extended filament. Using Hubble Frontier Fields (https://archive.stsci.edu/pub/hlsp/frontier/) (HFF) data in the F105W, F814W, F606W, and F435W filters, we compute the ICL fractions in the core of MACS~J0717.5+3745, and find large contributions of ICL, a result that is consistent with other studies.