2019ApJ...874....5Z

The influence of the new mass model Weizsacker-Skyrme 4 (WS4) on the r-process abundance distribution is investigated using the site-independent classical r-process and the site-dependent dynamical r-process models. The dynamical r-process calculations are performed under the neutrino-driven wind scenario. In comparison with the finite-range droplet model (FRDM) often used in r-process calculations, better agreement between the calculated abundance and the observed solar r-process abundance is found in both the classical and dynamical calculations by using the mass model WS4. The abundance underestimations at the A ∼ 115, 140, and 200 mass regions encountered with the calculations using the FRDM is overcome to a large extent by using WS4.