Formation of Giant Planets
"This Chapter [in the Handbook of Exoplanets] describes the principal route that, according to current knowledge, can lead to the formation of giant planets, the core nucleated accretion model, and an alternative route, the disk instability model, which may lead to the formation of planetary-mass objects on wide orbits."A dynamical origin for planets in triple star systems
"Here, we explore the possibility that planets in triples are formed as a consequence of the dynamical interactions of binaries in star clusters. Our simulations show that the probability of forming triple star systems with a planet is in the range 0.5−3%, potentially accounting for most of the observed population."