High resolution ALMA and HST imaging of $\kappa$CrB: a broad debris disc around a post-main sequence star with low-mass companions

J. B. Lovell, M. C. Wyatt, P. Kalas +6

$\kappa$CrB is a $\sim 2.5$Gyr old K1 sub-giant star, with an eccentric exo-Jupiter at $\sim 2.8$au and a debris disc at tens of au. We present ALMA Band 6 ($1.3$mm) and HST sca…