B. Zhao (赵斌)¹ and S. Q. Zhang (张双全)²
Astrophysical Journal 874, 5 Link to Article [DOI: 10.3847/1538-4357/ab0702 ]
¹School of Physics and Nuclear Energy Engineering, Beihang University Beijing 100191, People’s Republic of China
²School of Physics, Peking University, Beijing 100871, People’s Republic of China

The influence of the new mass model Weizsäcker–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.