HATS-15b and HATS-16b: Two Massive Planets Transiting Old G Dwarf Stars**The HATSouth network is operated by a collaboration consisting of Princeton University (PU), the Max Planck Institute für Astronomie (MPIA), the Australian National University (ANU), and the Pontificia Universidad Católica de Chile (PUC). The station at Las Campanas Observatory (LCO) of the Carnegie Institute is operated by PU in conjunction

S Ciceri,I Papp,J D Hartman,L Mancini,Benjamin J Fulton ,George Zhou ,I B Thompson ,Daniel Bayliss ,P Arriagada,Z Csubry,G Á Bakos ,Andrew W Howard ,R Paul Butler ,K Penev,R Brahm,Miguel De Val-Borro ,J Lázár,Stephen Shectman ,B P Schmidt ,Thomas Henning ,T G Tan,Andrés Jordán ,Geoffrey W Marcy ,V Suc,Jeffrey D Crane ,R W Noyes ,M Rabus,W Bhatti,N Espinoza,Howard Isaacson ,P Sári

doi:10.1088/1538-3873/128/965/074401

HATS-15b and HATS-16b: Two Massive Planets Transiting Old G Dwarf Stars**The HATSouth network is operated by a collaboration consisting of Princeton University (PU), the Max Planck Institute für Astronomie (MPIA), the Australian National University (ANU), and the Pontificia Universidad Católica de Chile (PUC). The station at Las Campanas Observatory (LCO) of the Carnegie Institute is operated by PU in conjunction

S Ciceri, I Papp + Show 29 more

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https://doi.org/10.1088/1538-3873/128/965/074401

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Journal: Publications of the Astronomical Society of the Pacific	Publication Date: Jun 10, 2016
Citations: 26	License type: iop-standard

Affiliation: Max Planck Institute for Astronomy, Hungarian Astronomical Association, Princeton University, University of Hawaiʻi at Mānoa, Australian National University, Carnegie Observatories, Carnegie Institution for Science, University of Geneva, Pontificia Universidad Católica de Chile, Millennium Institute of Astrophysics, Perth Exoplanet Survey Telescope Observatory, University of California, Berkeley, Center for Astrophysics Harvard & Smithsonian

#Las Cumbres Observatory Global Telescope #Las Campanas Observatory + Show 8 more

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Abstract

We report the discovery of HATS-15 b and HATS-16 b, two massive transiting extrasolar planets orbiting evolved (∼10 Gyr) main-sequence stars. The planet HATS-15 b, which is hosted by a G9 V star ( mag), is a hot Jupiter with mass of and radius of , and it completes its orbit in about 1.7 days. HATS-16 b is a very massive hot Jupiter with mass of and radius of it orbits around its G3 V parent star ( mag) in ∼2.7 days. HATS-16 is slightly active and shows a periodic photometric modulation, implying a rotational period of 12 days, which is unexpectedly short given its isochronal age. This fast rotation might be the result of the tidal interaction between the star and its planet.

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