4 papers
Remnant-wide mapping of heterogeneous presupernova burning histories in the O-rich ejecta of Cassiopeia A
Yui Kuboike, Toshiki Sato, Kai Matsunaga
Late-stage shell interactions, including shell mergers, can mix material across adjacent burning shells and imprint chemically inhomogeneous structures in the hydrostatic O-rich la…
Testing a Pre-Supernova Contribution to Ti in Cassiopeia A
Toshiki Sato, Joshua Issa, Falk Herwig +4
The radioactive isotope Ti in Cassiopeia A has been used as a tracer of the innermost ejecta and explosion asymmetries in core-collapse supernova explosions. However, recent…
The Origin of the Mg-rich Supernova Remnant J0550-6823 and the Frequency of Similar Events in the Large Magellanic Cloud
Yui Kuboike, Toshiki Sato, Hiromasa Suzuki +4
Shell burning and internal mixing in massive stars play an important role in setting the initial conditions for core-collapse supernova explosions. In the late stages of stellar ev…
Inhomogeneous stellar mixing in the final hours before the Cassiopeia A supernova
Toshiki Sato, Kai Matsunaga, Hiroyuki Uchida +10
Understanding stars and their evolution is a key goal of astronomical research and has long been a focus of human interest. In recent years, theorists have paid much attention to t…