* Astronomy

Title: HATS-1b: The First Transiting Planet Discovered by the HATSouth Survey
Authors: K. Penev (1,2), G. A. Bakos (1,2), D. Bayliss (3), A. Jordán (4), M. Mohler (5), G. Zhou (3), V. Suc (4), M. Rabus (4), J. D. Hartman (1,2), L. Mancini (5), B. Béky (2), Z. Csubry (1,2), L. Buchhave (6), T. Henning (5), N. Nikolov (5), B. Csák (5), R. Brahm (4), N. Espinoza (4), P. Conroy (3), R. W. Noyes (2), D. D. Sasselov (2), B. Schmidt (3), D. J. Wright (7), C. G. Tinney (7), B. C. Addison (7), J. Lázár (8), I. Papp (8), P. Sári (8) ((1) Department of Astrophysical Sciences, Princeton University, (2) CfA, (3) ANU, (4) PUC, (5) MPIA, (6) Niels Bohr Institute, (7) NSW, (8) HAA)

We report the discovery of HATS-1b, a transiting extrasolar planet orbiting the moderately bright V=12.05 G dwarf star GSC 6652-00186, and the first planet discovered by HATSouth, a global network of autonomous wide-field telescopes. HATS-1b has a period P~3.4465 d, mass Mp~1.86 Jupiter masses, and radius Rp~1.30 Jupiter radii. The host star has a mass of 0.99 solar masses, and radius of 1.04 solar radii. The discovery light curve of HATS-1b has near continuous coverage over several multi-day periods, demonstrating the power of using a global network of telescopes to discover transiting planets.

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