SIMBAD references

We report the discovery of HATS-2b, the second transiting extrasolar planet detected by the HATSouth survey. HATS-2b is moving on a circular orbit around a V=13.6mag, K-type dwarf star (GSC 6665-00236), at a separation of 0.0230±0.0003 AU and with a period of 1.3541 days. The planetary parameters have been robustly determined using a simultaneous fit of the HATSouth, MPG/ESO 2.2m/GROND, Faulkes Telescope South/Spectral transit photometry, and MPG/ESO 2.2m/FEROS, Euler 1.2m/CORALIE, AAT 3.9m/CYCLOPS radial-velocity measurements. HATS-2b has a mass of 1.37±0.16M_J, a radius of 1.14±0.03R_J, and an equilibrium temperature of 1567±30K. The host star has a mass of 0.88±0.04M_☉ and a radius of 0.89±0.02R_☉, and it shows starspot activity. We characterized the stellar activity by analyzing two photometric follow-up transit light curves taken with the GROND instrument, both obtained simultaneously in four optical bands (covering the wavelength range of 3860-9520Å). The two light curves contain anomalies compatible with starspots on the photosphere of the host star along the same transit chord.