  We investigate the structural, thermodynamic and dynamic behavior of of a two
dimensional core-corona system using Langevin Dynamics simulations. The
particles are modeled using a core-softened potential that exhibits waterlike
anomalies for the 3D case. For quasi-2D systems we have observed previously a
new region of structural anomaly. Now, our results show that a new region of
structural, density and diffusion anomalies arises for the 2D system. Our
findings indicates that while the anomalous region at lower densities observed
is due the competition between the two length scales in the potential, the
traditional mechanism, the higher densities anomalous region is related to
changes in the particles conformation and a melting region.
