Speaker
Description
The detection of 1.5-3.2 Myr 60-Fe on Earth indicates recent nearby core-collapse supernovae.
For supernovae in multiple stars, the primary stars become neutron stars, while former
companions can get unbound (runaway stars). By tracing back the space motion of runaway
and neutron stars to the nearest young (about 16 Myr) association of massive stars
(Scorpius-Centaurus-Lupus), we found kinematic evidence that a certain runaway star
and a certain radio pulsar were released by a supernova in a binary about 1.8 Myr ago
at about 107 pc distance; association age and flight time determine the progenitor mass
(16-18 M_sun), which can constrain supernova nucleosynthesis yields and 60-Fe uptake on Earth.
Our scenario links 60-Fe found on Earth to an individual supernova in a binary.
| Keywords | Core-Collapse Supernovae |
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