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We study the structure and internal kinematics of the "star pile" in Abell545 - a low surface brightness structure lying in the center of the cluster.Wehave obtained deep long-slit spectroscopy of the star pile using VLT/FORS2 andGemini/GMOS, which is analyzed in conjunction with deep multiband CFHT/MEGACAMimaging. As presented in a previous study the star pile has a flat luminosityprofile and its color is consistent with the outer parts of ellipticalgalaxies. Its velocity map is irregular, with parts being seemingly associatedwith an embedded nucleus, and others which have significant velocity offsets tothe cluster systemic velocity with no clear kinematical connection to any ofthe surrounding galaxies. This would make the star pile a dynamically definedstellar intra-cluster component. The complicated pattern in velocity andvelocity dispersions casts doubts on the adequacy of using the whole star pileas a dynamical test for the innermost dark matter profile of the cluster. Thisstatus is fulfilled only by the nucleus and its nearest surroundings which lieat the center of the cluster velocity distribution.

Crazy heart: kinematics of the "star pile" in Abell 545