Evidence for planets in post-common envelope binaries

Abstract

In the recent years, several circum-binary planets orbiting post-common envelope systems have been announced. Some of the derived planetary parameters have been questioned by others. We therefore present an investigation of the current status in this dynamically evolving field. False positive scenarios for the eclipse time variations are therefore discussed. We also present an update on new measurements on NNSer and shortly address the quest for the frequency of planets in post-common envelope systems.