On the triple-star origin of the planetary nebula Sh 2-71

In a paper led by David Jones with Romano Corradi from La Palma we tried to come up with a theory to explain the peculiar shape (including new distant emission regions firstly presented here) and central stars of the planetary nebula. Our preferred models includes Lidov-Kozai cycles and triple star disruption due to ejection of the planetary nebula.

Paper now accepted to MNRAS:https://arxiv.org/abs/1908.04582v1