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Explaining the origin and evolution of exoplanetary "hot Jupiters" remains asignificant challenge. One possible mechanism for their production isplanet-planet interactions, which produces hot Jupiters from planets born farfrom their host stars but near their dynamical stability limits. In the muchmore likely case of planets born far from their dynamical stability limits, canhot Jupiters can be formed in star clusters? Our N-body simulations ofplanetary systems inside star clusters answer this question in the affirmative,and show that hot Jupiter formation is not a rare event. We detail three casestudies of the dynamics-induced births of hot Jupiters on highly eccentricorbits that can only occur inside star clusters. The hot Jupiters' orbits bearremarkable similarities to those of some of the most extreme exoplanets known:HAT-P-32 b, HAT-P-2 b, HD 80606 b and GJ 876 d. If stellar perturbations formedthese hot Jupiters then our simulations predict that these very hot, innerplanets are often accompanied by much more distant gas giants in highlyeccentric orbits.

Dynamical Interactions Make Hot Jupiters in Open Star Clusters