HATS-1b: THE FIRST TRANSITING PLANET DISCOVERED BY THE HATSouth SURVEY*

摘要

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 of P ≈ 3.4465?days, mass of Mp ≈ 1.86?M J, and radius of Rp ≈ 1.30?R J. The host star has a mass of 0.99?M ☉ and radius of 1.04?R ☉. The discovery light curve of HATS-1b has near-continuous coverage over several multi-day timespans, demonstrating the power of using a global network of telescopes to discover transiting planets.