We report the discovery of two transiting extrasolar planets from the HATSouth survey .
HATS-11 , a V=14.1 G0-star shows a periodic 12.9 mmag dip in its light curve every 3.6192 days and a radial velocity variation consistent with a Keplerian orbit .
HATS-11 has a mass of 1.000 \pm 0.060 M _ { \sun } , a radius of 1.444 \pm 0.057 R _ { \sun } and an effective temperature of 6060 \pm 150 K , while its companion is a 0.85 \pm 0.12 M _ { J } , 1.510 \pm 0.078 R _ { J } planet in a circular orbit .
HATS-12 shows a periodic 5.1 mmag flux decrease every 3.1428 days and Keplerian RV variations around a V=12.8 F-star .
HATS-12 has a mass of 1.489 \pm 0.071 M _ { \sun } , a radius of 2.21 \pm 0.21 R _ { \sun } and an effective temperature of 6408 \pm 75 K. For HATS-12b , our measurements indicate that this is a 2.38 \pm 0.11 M _ { J } , 1.35 \pm 0.17 R _ { J } planet in a circular orbit .
Both host stars show sub-solar metallicity of -0.390 \pm 0.060 dex and -0.100 \pm 0.040 dex , respectively and are ( slightly ) evolved stars .
In fact , HATS-11 is amongst the most metal-poor and , HATS-12 is amongst the most evolved stars hosting a hot Jupiter planet .
Importantly , HATS-11 and HATS-12 have been observed in long cadence by Kepler as part of K2 campaign 7 ( EPIC216414930 and EPIC218131080 respectively ) .