Abstract :
Recently, detections of the r-process elements have been done for several metal-deficient halo stars with metallicity of [View the MathML source] ∼ −1.5 −−3.0. They have indicated that the observed abundance pattern of heavy elements is very similar to that of the solar r-process elements for the mass region 56 < Z < 70, although the abundance of light neutron capture elements have a large scattering. We discuss the mechanism of this universality of the pattern and the possible way to set restriction to the nuclear mass models.
