Ralph Neuhäuser (Astrophysical Institute, U Jena, Germany) - Tracing back neutron stars and runaways to study recent nearby Galactic supernovae

Sco-Cen-Lup is the largest nearby association of young stars, where some 25-30 SNe should have occurred over the last 20 Myr. Some amount of 60-Fe from these SNe has arrived on Earth 1.5-3.2 Myr ago. With the distances to these SNe and the masses of the progenitor stars, it might be possible to test and constrain SN nucleosynthesis models. We try to determine them by back-tracing neutron stars and runaway stars (former companions) from those SNe through the Galactic potential to find cases, where a runaway and a neutron star were at the same time at the same place within Sco-Cen-Lup - evidence for a SN in a binary. We found one best case: zeta Oph and PSR B1706 got unbound in a SN some 1.8 Myr ago at 111 pc from Earth (Neuhaeuser et al. 2020 MNRAS). While we have previously used the Hobbs et al. neutron star velocity distribution to account for the unknown radial velocities of neutron stars, we now tried several different (new) distributions - all giving similar results. Now, Gaia data show that Sco-Cen-Lup consists of some 30 astrometrically distinct sub-groups. We can show that zeta Oph and PSR B1706 indeed originated in a SN in a binary in one of the richest sub-groups (partly unpublished). In addition, we will summarize our work on historical SNe from the Galaxy from AD 1006 to 1604, with newly found observations on SN 1181, which was recently suggested as Galactic SN Iax.