TESS Spots a Hot Jupiter with an Inner Transiting Neptune
Journal article, 2020
Hot Jupiters are rarely accompanied by other planets within a factor of a few in orbital distance. Previously, only two such systems have been found. Here, we report the discovery of a third system using data from the Transiting Exoplanet Survey Satellite (TESS). The host star, TOI-1130, is an eleventh magnitude K-dwarf in Gaia G-band. It has two transiting planets: a Neptune-sized planet (3.65 ± 0.10 R\oplus) with a 4.1 days period, and a hot Jupiter (1.50-0.22+0.27 RJ) with an 8.4 days period. Precise radial-velocity observations show that the mass of the hot Jupiter is 0.974-0.044+0.043 MJ. For the inner Neptune, the data provide only an upper limit on the mass of 0.17 MJ (3σ). Nevertheless, we are confident that the inner planet is real, based on follow-up ground-based photometry and adaptive-optics imaging that rule out other plausible sources of the TESS transit signal. The unusual planetary architecture of and the brightness of the host star make TOI-1130 a good test case for planet formation theories, and an attractive target for future spectroscopic observations.
Exoplanet astronomy
Extrasolar rocky planets
Exoplanets
Hot Jupiters
Extrasolar gas giants
Author
Chelsea X. Huang
Massachusetts Institute of Technology (MIT)
S. N. Quinn
Harvard-Smithsonian Center for Astrophysics
A. Vanderburg
University of Texas
Juliette Becker
California Institute of Technology (Caltech)
Joseph E. Rodriguez
Harvard-Smithsonian Center for Astrophysics
Francisco J. Pozuelos
University of Liège
Davide Gandolfi
University of Turin
G. Zhou
Harvard-Smithsonian Center for Astrophysics
Andrew W. Mann
The University of North Carolina System
Karen A. Collins
Harvard-Smithsonian Center for Astrophysics
Ian Crossfield
Massachusetts Institute of Technology (MIT)
Khalid Barkaoui
Cadi Ayyad University
University of Liège
Kevin I. Collins
George Mason University
Malcolm Fridlund
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics
Michaël Gillon
University of Liège
Erica J. Gonzales
University of California
Maximilian N. Günther
Massachusetts Institute of Technology (MIT)
Todd J. Henry
RECONS Institute
Steve B. Howell
National Aeronautics and Space Administration (NASA)
Hodari-Sadiki James
Georgia State University
Wei-Chun Jao
Georgia State University
Emmanuel Jehin
University of Liège
Eric L. N. Jensen
Swarthmore College
Stephen R. Kane
University of California
Jack J. Lissauer
National Aeronautics and Space Administration (NASA)
Elisabeth Matthews
Massachusetts Institute of Technology (MIT)
Rachel A. Matson
US Naval Observatory
Leonardo A. Paredes
Georgia State University
Joshua E. Schlieder
National Aeronautics and Space Administration (NASA)
K.G. Stassun
Vanderbilt University
Avi Shporer
Massachusetts Institute of Technology (MIT)
Lizhou Sha
Massachusetts Institute of Technology (MIT)
Thiam-Guan Tan
Perth Exoplanet Survey Telescope
Iskra Georgieva
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics
Savita Mathur
Instituto de Astrofísica de Canarias
Enric Palle
Instituto de Astrofísica de Canarias
Carina Persson
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics
Vincent Van Eylen
University College London (UCL)
George Ricker
Massachusetts Institute of Technology (MIT)
R. Vanderspek
Massachusetts Institute of Technology (MIT)
D.W. Latham
Harvard-Smithsonian Center for Astrophysics
Joshua N. Winn
Princeton University
S. Seager
Massachusetts Institute of Technology (MIT)
Jon M. Jenkins
National Aeronautics and Space Administration (NASA)
Christopher J. Burke
Massachusetts Institute of Technology (MIT)
Robert Goeke
Massachusetts Institute of Technology (MIT)
Stephen Rinehart
National Aeronautics and Space Administration (NASA)
Mark E. Rose
National Aeronautics and Space Administration (NASA)
E. B. Ting
National Aeronautics and Space Administration (NASA)
Guillermo Torres
Harvard-Smithsonian Center for Astrophysics
Ian Wong
Massachusetts Institute of Technology (MIT)
Astrophysical Journal Letters
2041-8205 (ISSN) 2041-8213 (eISSN)
Vol. 892 1 L7Exoplanets from space – CHEOPS and PLATO, ESA’s next two projects
Swedish National Space Board (174/18), 2017-01-01 -- 2022-12-31.
Subject Categories (SSIF 2011)
Astronomy, Astrophysics and Cosmology
Roots
Basic sciences
DOI
10.3847/2041-8213/ab7302