Two Hot Jupiters from K2 Campaign 4

We confirm the planetary nature of two transiting hot Jupiters discovered by the Kepler spacecraft’s K2 extended mission in its Campaign 4, using precise radial velocity measurements from FIES@NOT, HARPS-N@TNG, and the coudé spectrograph on the McDonald Observatory 2.7 m telescope. K2-29 b (EPIC 211089792b) transits a K1V star with a period of 3.2589263 ± 0.0000015 days; its orbit is slightly eccentric (e={0.084}_-0.023^+0.032). It has a radius of {R}_P={1.000}_-0.067^+0.071 R_J and a mass of {M}_P={0.613}_-0.026^+0.027 M_J. Its host star exhibits significant rotational variability, and we measure a rotation period of {P}_{rot}=10.777+/- 0.031 days. K2-30 b (EPIC 210957318 b) transits a G6V star with a period of 4.098503 ± 0.000011 days. It has a radius of {R}_P={1.039}_-0.051^+0.050 R_J and a mass of {M}_P={0.579}_-0.027^+0.028 M_J. The star has a low metallicity for a hot Jupiter host, [{Fe}/{{H}}]=-0.15+/- 0.05.