(Proposal ID) S11B-052

(PI) Radovich, Mario

(Proposal Title)
A weak-lensing analysis of two new clusters discovered by the Planck survey

(Abstract)
We propose an imaging (griz) follow-up with SuprimeCAM, of two new clusters of 
galaxies discovered by the Planck survey through the Sunyaev-Zeldovich effect. 
There is evidence that clusters detected by this survey could belong to a 
population of massive clusters, less luminous and with more disturbed 
morphology than those usually traced by X-ray surveys. The proposed imaging 
observations are aimed at performing a weak lensing analysis of the clusters, 
to be done using a deep r-band image, both to reconstruct the projected mass 
distribution and derive the mass profile. Multi-band data (giz) are required 
to remove the galaxies from the foreground and cluster galaxies, which would 
dilute the lensing signal and bias the mass estimate. In addition, multi-color 
photometry will allow to separate between late and early-type cluster galaxies 
and derive their distribution in the cluster, as well as the mass/luminosity 
radial profile from the joint lensing and optical analysis.