dc.contributor.author | Nishimura, Nobuya | |
dc.contributor.author | Fischer, Tobias | |
dc.contributor.author | Thielemann, Friedrich-Karl | |
dc.contributor.author | Froehlich, Carla | |
dc.contributor.author | Hempel, Matthias | |
dc.contributor.author | Kaeppeli, Roger | |
dc.contributor.author | Martinez-Pinedo, Gabriel | |
dc.contributor.author | Rauscher, T. | |
dc.contributor.author | Sagert, Irina | |
dc.contributor.author | Winteler, Christian | |
dc.date.accessioned | 2013-04-16T07:29:47Z | |
dc.date.available | 2013-04-16T07:29:47Z | |
dc.date.issued | 2012-10-10 | |
dc.identifier.citation | Nishimura , N , Fischer , T , Thielemann , F-K , Froehlich , C , Hempel , M , Kaeppeli , R , Martinez-Pinedo , G , Rauscher , T , Sagert , I & Winteler , C 2012 , ' Nucleosynthesis in core-collapse supernova explosions triggered by a quark-hadron phase transition ' , The Astrophysical Journal , vol. 758 , no. 1 , 9 . https://doi.org/10.1088/0004-637X/758/1/9 | |
dc.identifier.issn | 0004-637X | |
dc.identifier.uri | http://hdl.handle.net/2299/10413 | |
dc.description.abstract | We explore heavy-element nucleosynthesis in the explosion of massive stars that are triggered by a quark-hadron phase transition during the early post-bounce phase of core-collapse supernovae. The present study is based on general-relativistic radiation hydrodynamics simulations with three-flavor Boltzmann neutrino transport in spherical symmetry, which utilize a quark-hadron hybrid equation of state based on the MIT bag model for strange quark matter. The quark-hadron phase transition inside the stellar core forms a shock wave propagating toward the surface of the proto-neutron star. This shock wave results in an explosion and ejects neutron-rich matter from the outer accreted layers of the proto-neutron star. Later, during the cooling phase, the proto-neutron star develops a proton-rich neutrino-driven wind. We present a detailed analysis of the nucleosynthesis outcome in both neutron-rich and proton-rich ejecta and compare our integrated nucleosynthesis with observations of the solar system and metal-poor stars. For our standard scenario, we find that a "weak" r-process occurs and elements up to the second peak (A similar to 130) are successfully synthesized. Furthermore, uncertainties in the explosion dynamics could barely allow us to obtain the strong r-process which produces heavier isotopes, including the third peak (A similar to 195) and actinide elements. | en |
dc.format.extent | 13 | |
dc.format.extent | 1095802 | |
dc.language.iso | eng | |
dc.relation.ispartof | The Astrophysical Journal | |
dc.subject | COMPACT STARS | |
dc.subject | MATTER | |
dc.subject | supernovae: general | |
dc.subject | R-PROCESS NUCLEOSYNTHESIS | |
dc.subject | MASSIVE STARS | |
dc.subject | STAR MERGERS | |
dc.subject | nuclear reactions, nucleosynthesis, abundances | |
dc.subject | HYDRODYNAMICS | |
dc.subject | EQUATION | |
dc.subject | stars: neutron | |
dc.subject | dense matter | |
dc.subject | EJECTA | |
dc.subject | NEUTRINO-DRIVEN WINDS | |
dc.subject | EVOLUTION | |
dc.title | Nucleosynthesis in core-collapse supernova explosions triggered by a quark-hadron phase transition | en |
dc.contributor.institution | Centre for Astrophysics Research | |
dc.description.status | Peer reviewed | |
rioxxterms.versionofrecord | 10.1088/0004-637X/758/1/9 | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |