A Testbed for Tidal Migration: the 3D Architecture of an Eccentric Hot Jupiter HD 118203 b Accompanied by a Possibly Aligned Outer Giant Planet

Characterizing outer companions to hot Jupiters plays a crucial role in deciphering their origins. We present the discovery of a long-period giant planet, HD 118203 c (m_{c}=11.79^{+0.69}_{-0.63}\ \mathrm{M_{J}}, a_{c}=6.28^{+0.10}_{-0.11} AU) exterior to a close-in eccentric hot Jupiter HD 118203 b (P_{b}=6.135\ \mathrm{days}, m_{b}=2.14\pm{0.12}\ \mathrm{M_{J}}, r_{b}=1.14\pm{0.029}\ \mathrm{R_{J}}, e_{b}=0.31\pm{0.007}) based on twenty-year... Show more