The path (upper left panel), the resulting pressure profile (upper right panel) normalized to P_⊙ defined in the text, the star formation rate (lower left panel) and the resulting CMD (lower right panel) for a test satellite orbit with eccentricity e = 25 and baryonic mass M_b ≅ 10⁷   M_⊙. The colour bar is plotted only in the upper left panel, red for the oldest stars at the beginning of the orbital path t = 0, blue for the youngest stars born after 10 Gyr of orbital evolution. t_lb is the look-back time in Gyr. In the CMD the size of the dots is proportional to the metallicity Z of the stars as obtained the Padova CMD simulator YZVAR fed with the stellar models of Bertelli et al. (2009) (metal rich stars are indicated by large dots).