HATS-60b-HATS-69b: 10 Transiting Planets from HATSouth

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Abstract

We report the discovery of 10 transiting extrasolar planets by the HATSouth survey. The planets range in mass from the super-Neptune HATS-62b, with Mₚ < 0.179 Mⱼ, to the super-Jupiter HATS-66b, with Mₚ = 5.33 Mⱼ, and in size from the Saturn HATS-69b, with Rₚ = 0.94 Rⱼ, to the inflated Jupiter HATS-67b, with Rₚ = 1.69 Rⱼ. The planets have orbital periods between 1.6092 days (HATS-67b) and 7.8180 days (HATS-61b). The hosts are dwarf stars with masses ranging from 0.89 M⊙(HATS-69) to 1.56 M⊙ (HATS-64) and have apparent magnitudes between V = 12.276 ± 0.020 mag (HATS-68) and V = 14.095 ± 0.030 mag (HATS-66). The super-Neptune HATS-62b is the least massive planet discovered to date with a radius larger than Jupiter. Based largely on the Gaia DR2 distances and broadband photometry, we identify three systems (HATS-62, HATS-64, and HATS-65) as having possible unresolved binary star companions. We discuss in detail our methods for incorporating the Gaia DR2 observations into our modeling of the system parameters and into our blend analysis procedures.

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Keywords

Stars, Photometry, Astronomical spectroscopy, Echelle spectrograph, Telescopes, Algorithms

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NSF MRI grant NSF/AST-0723074, NSF/AST-1108686; NASA grants NNX09AB29G, NNX12AH91H, and NNX17AB61G; FONDECYT project 1171208, BASAL CATA PFB-06, and project IC120009 "Millennium Institute of Astrophysics (MAS)" of the Millennium Science Initiative, Chilean Ministry of Economy; FONDECYT Post-doctoral Fellowship Project no. 3180246; IC120009 "Millennium Institute of Astrophysics (MAS)" of the Millennium Science Initiative, Chilean Ministry of Economy; BASAL CATA PFB-06; NSF Graduate Research Fellowship, grant no. DGE 1144152

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©2019 The American Astronomical Society. All rights reserved.

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