학술논문
TOI-1130: A photodynamical analysis of a hot Jupiter in resonance with an inner low-mass planet
Document Type
Working Paper
Author
Korth, J.; Gandolfi, D.; Šubjak, J.; Howard, S.; Ataiee, S.; Collins, K. A.; Quinn, S. N.; Mustill, A. J.; Guillot, T.; Lodieu, N.; Smith, A. M. S.; Esposito, M.; Rodler, F.; Muresan, A.; Abe, L.; Albrecht, S. H.; Alqasim, A.; Barkaoui, K.; Beck, P. G.; Burke, C. J.; Butler, R. P.; Conti, D. M.; Collins, K. I.; Crane, J. D.; Dai, F.; Deeg, H. J.; Evans, P.; Grziwa, S.; Hatzes, A. P.; Hirano, T.; Horne, K.; Huang, C. X.; Jenkins, J. M.; Kabáth, P.; Kielkopf, J. F.; Knudstrup, E.; Latham, D. W.; Livingston, J.; Luque, R.; Mathur, S.; Murgas, F.; Osborne, H. L. M.; Pallé, E.; Persson, C. M.; Rodriguez, J. E.; Rose, M.; Rowden, P.; Schwarz, R. P.; Seager, S.; Serrano, L. M.; Sha, L.; Shectman, S. A.; Shporer, A.; Srdoc, G.; Stockdale, C.; Tan, T. G.; Teske, J. K.; Van Eylen, V.; Vanderburg, A.; Vanderspek, R.; Wang, S. X.; Winn, J. N.
Source
A&A 675, A115 (2023)
Subject
Language
Abstract
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, 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 perform a photodynamical modeling of the HARPS and PFS RVs, and transit photometry from the Transiting Exoplanet Survey Satellite (TESS) and the TESS Follow-up Observing Program. We determine the planet masses and radii of TOI-1130 b and TOI-1130 c to be Mb = 19.28 $\pm$ 0.97 M$_\oplus$ and Rb = 3.56 $\pm$ 0.13 R$_\oplus$, and Mc = 325.59 $\pm$ 5.59 M$_\oplus$ and Rc = 13.32+1.55-1.41 R$_\oplus$, respectively. We spectroscopically confirm TOI-1130 b that was previously only validated. We find that the two planets orbit 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 increasing population of hot Jupiters with an inner low-mass planet that challenges the pathway for hot Jupiter formation. We also detect a linear RV trend possibly due to the presence of an outer massive companion.
Comment: 19 pages, Accepted to A&A
Comment: 19 pages, Accepted to A&A