Speaker
Description
With about 100 Galactic candidates detected, Post-Asymptotic Giant Branch (post-AGB) binaries are now understood to be fairly commonly formed systems at the end of stellar evolution, displaying clear signs of ongoing re-accretion from their ubiquitous circumbinary disks. For $\sim 35$ of these systems, long-term, high-resolution spectral monitoring of the $\mathrm{H_\alpha}$ line has revealed that this re-accretion has resulted in the launching of a jet from an accretion disk around the faint secondary star. I will first briefly describe the building blocks of post-AGB binaries, as well as how their jets are observed in $\mathrm{H_\alpha}$. Afterwards, I will show how modelling of the jet-related spectral signatures throughout the orbit can closely probe the jet-formation physics, accretion disk properties and re-accretion phenomena in these intriguing systems.
