Numerical studies on the link between radioisotopic signatures on Earth and the formation of the Local Bubble. II. Advanced modelling of interstellar 26Al, 53Mn, 60Fe, and 244Pu influxes as traces of past supernova activity in the solar neighbourho

Vol. 679
6. Interstellar and circumstellar matter

Numerical studies on the link between radioisotopic signatures on Earth and the formation of the Local Bubble. II. Advanced modelling of interstellar 26Al, 53Mn, 60Fe, and 244Pu influxes as traces of past supernova activity in the solar neighbourhood

by M.M. Schulreich, J. Feige, D. Breitschwerdt, 2023, A&A, 680, A39

The dispersion of short-lived heavy radionuclides provides a unique way of studying the chemical evolution of the solar neighborhood within a single Galactic rotation. Since core collapse supernovae are the production agents, the massive progenitors can be assigned through dynamical simulations to nearby OB associations. This pathbreaking study aims at a comprehensive explanation of the intersection of star formation and death in the neighborhood of the Solar System. Trajectories for the constituent massive members are followed through supernova explosion and the pollution of the Local Bubble with 26Al, 53Mn, and 60Fe is modeled and compared with geological data. This reveals additional contributions from stellar winds and ambient pollution when the Solar System entered the Local Bubble.