TOI-1130: A photodynamical analysis of a hot Jupiter in resonance with an inner low-mass planet
Journal article, 2023
The TOI-1130 is a known planetary system around a K-dwarf consisting of a gas giant planet, TOI-1130 c on an 8.4-day orbit that is accompanied by an inner Neptune-sized planet, TOI-1130 b, with an orbital period of 4.1 days. We collected precise radial velocity (RV) measurements of TOI-1130 with the HARPS and PFS spectrographs as part of our ongoing RV follow-up program. We performed a photodynamical modeling of the HARPS and PFS RVs, along with transit photometry from the Transiting Exoplanet Survey Satellite (TESS) and the TESS Follow-up Observing Program (TFOP). We determined the planet masses and radii of TOI-1130 b and TOI-1130 c to be Mb = 19.28 ± 0.97M⊕ and Rb = 3.56 ± 0.13 R⊕, and Mc = 325.59 ± 5.59M⊕ and Rc = 13.32-1.41+1.55 R⊕, respectively. We have spectroscopically confirmed the existence of TOI-1130 b, which had previously only been validated. We find that the two planets have orbits with small eccentricities in a 2:1 resonant configuration. This is the first known system with a hot Jupiter and an inner lower mass planet locked in a mean-motion resonance. TOI-1130 belongs to the small, yet growing population of hot Jupiters with an inner low-mass planet that poses a challenge to the pathway scenario for hot Jupiter formation. We also detected a linear RV trend that is possibly due to the presence of an outer massive companion.
Techniques: radial velocities
Planets and satellites: individual: TOI-1130
Planetary systems
Techniques: photometric
Author
Judith Korth
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics
Lund University
D. Gandolfi
University of Turin
J. Šubjak
European Southern Observatory (ESO)
Harvard-Smithsonian Center for Astrophysics
Charles University
Czech Academy of Sciences
S. Howard
Observatoire de la Cote d'Azur
S. Ataiee
Ferdowsi University of Mashhad
Karen A. Collins
Harvard-Smithsonian Center for Astrophysics
Samuel N. Quinn
Harvard-Smithsonian Center for Astrophysics
A. J. Mustill
Lund University
T. Guillot
Observatoire de la Cote d'Azur
N. Lodieu
University of La Laguna
Instituto de Astrofísica de Canarias
A. M.S. Smith
German Aerospace Center (DLR)
M. Esposito
Thüringer Landessternwarte Tautenburg
F. Rodler
European Southern Observatory Santiago
Alexandra Muresan
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics
L. Abe
Observatoire de la Cote d'Azur
Simon Albrecht
Aarhus University
A. Alqasim
University College London (UCL)
Khalid Barkaoui
University of Liège
Instituto de Astrofísica de Canarias
Massachusetts Institute of Technology (MIT)
P. G. Beck
Instituto de Astrofísica de Canarias
University of Graz
Christopher J. Burke
Massachusetts Institute of Technology (MIT)
R.P. Butler
Carnegie Observatories
D. Conti
American Association of Variable Star Observers
Kevin I. Collins
George Mason University
J.D. Crane
Carnegie Observatories
F. Dai
California Institute of Technology (Caltech)
H. Deeg
Instituto de Astrofísica de Canarias
University of La Laguna
P. Evans
El Sauce Observatory
S. Grziwa
University of Cologne
A. Hatzes
Thüringer Landessternwarte Tautenburg
T. Hirano
National Astronomical Observatory of Japan
National Institutes of Natural Sciences
Keith Horne
University of St Andrews
Chelsea X. Huang
University of Southern Queensland
Jon M. Jenkins
NASA Ames Research Center
Petr Kabath
Czech Academy of Sciences
J. F. Kielkopf
University of Louisville
E. Knudstrup
Aarhus University
D. W. Latham
Harvard-Smithsonian Center for Astrophysics
J.H. Livingston
National Astronomical Observatory of Japan
National Institutes of Natural Sciences
The Graduate University for Advanced Studies (SOKENDAI)
R. Luque
University of Chicago
S. Mathur
University of La Laguna
Instituto de Astrofísica de Canarias
F. Murgas
University of La Laguna
Instituto de Astrofísica de Canarias
H. L.M. Osborne
University College London (UCL)
Enric Palle
University of La Laguna
Instituto de Astrofísica de Canarias
Carina Persson
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics
Joseph E. Rodriguez
Michigan State University
Mark E. Rose
NASA Ames Research Center
Pamela Rowden
Royal Astronomical Society
R. Schwarz
Harvard-Smithsonian Center for Astrophysics
S. Seager
Massachusetts Institute of Technology (MIT)
L. M. Serrano
University of Turin
Lizhou Sha
University of Wisconsin Madison
S.A. Shectman
Carnegie Observatories
Avi Shporer
Massachusetts Institute of Technology (MIT)
G. Srdoc
Kotizarovci Observatory
C. Stockdale
Hazelwood Observatory
Thiam Guan Tan
Perth Exoplanet Survey Telescope
J. K. Teske
Carnegie Observatories
Vincent Van Eylen
University College London (UCL)
A. Vanderburg
Massachusetts Institute of Technology (MIT)
Roland K. Vanderspek
Massachusetts Institute of Technology (MIT)
S. Wangm
Tsinghua University
J. N. Winn
Princeton University
Astronomy and Astrophysics
0004-6361 (ISSN) 1432-0746 (eISSN)
Vol. 675 A115Subject Categories
Astronomy, Astrophysics and Cosmology
DOI
10.1051/0004-6361/202244617