ORIGIN OF MATTER AND EVOLUTION OF GALAXIES 2013 [electronic resource] : Proceedings of the 12th International Symposium on Origin of Matter and Evolution of Galaxies (OMEG12), Tsukuba, Japan, 18-21 November 2013 / Editors, Sunchan Jeong and 3 others ; Sponsoring Organizations, Co-Hosts, High Energy Accelerator Research Organization (KEK) and 8 others ; Partly supported by Commemorative Organization for the Japan World Exposition ('70) and Grant-in-aid for scientific research on innovative areas, 'Nuclear matter in neutron stars investigated by experiments and astronomical observations'.