R-process Nucleosynthesis in Supernovae
- Heavier elements than iron, especially precious metals like silver, gold, and platinum, and all actinoids like thorium and uranium are produced by r-process (rapid-neutron capture). We have studied the r-process nucleosynthesis in supernova explosions, with a nuclear reaction network from neutrons and protons up to fermium isotopes. Our results imply that the robust r-process takes place in either of low mass (8-10 solar masses) supernovae or rather massive (20-30 solar masses) supernovae (jpeg file, 501 KB; pdf file, 38 KB; avi movie, 16 MB).
- The r-Process in Supernovae: Impact of New Microscopic Mass Formulae
Wanajo, S., Goriely, S., Samyn, M., & Itoh, N. 2004, ApJ, 606, 1057-1069
Fig. 4 (eps file, avi movie), Fig. 7 (eps file, avi movie), Fig. 11 (eps file, avi movie)- The r-Process in Supernova Explosions from the Collapse of O-Ne-Mg Cores
Wanajo, S., Tamamura, M., Itoh, N., Nomoto, K., Ishimaru, Y., Beers, T. C., & Nozawa, S. 2003, ApJ, 593, 968-979
- The r-process in the neutrino winds of core-collapse supernovae and U-Th cosmochronology
Wanajo, S., Itoh, N., Ishimaru, Y., Nozawa, S., & Beers, T. C. 2002, ApJ, 577, 853- The r-process in neutrino-driven winds from nascent, ``compact'' neutron stars of core-collapse supernovae
Wanajo, S., Kajino, T., Mathews, G. J., & Otsuki, K. 2001, ApJ, 554, 578