Giant planet migration during the disc dispersal phase

Context. Transition discs are expected to be a natural outcome of the interplay between photoevaporation and giant planet formation. Massive planets reduce inflow material from outer inner disc, therefore triggering an earlier onset disc dispersal due through process known as Planet-Induced PhotoEvaporation. In this case, cavity is formed inside planetary orbit removed by photoevaporation, leaving only drive migration planet. Aims. We investigate impact on focus specifically case transition with evacuated location. This important for determining under what circumstances efficient at halting planets, thus affecting final orbital distribution population planets. Methods. For purpose, we use 2D FARGO simulations model in range primordial subject photoevaporation. The results then compared standard prescriptions used calculate tracks 1D synthesis models. Results. show that once location depleted gas, ceases. contradicts obtained impulse approximation, which predicts accelerated inward have been cleared orbit. Conclusions. These suggest approximation may not suitable embedded discs. A better could models would involve gas surface density 3:2 mean motion resonance reaches threshold value 0.01 g cm ‒2 .