| Title: |
TOI-1130: A photodynamical analysis of a hot Jupiter in resonance with an inner low-mass planet |
| Authors: |
Korth, J; Gandolfi, D; Šubjak, J; Howard, S; Ataiee, S; Collins, KA; Quinn, SN; Mustill, AJ; Guillot, T; Lodieu, N; Smith, AMS; Esposito, M; Rodler, F; Muresan, A; Abe, L; Albrecht, SH; Alqasim, A; Barkaoui, K; Beck, PG; Burke, CJ; Butler, RP; Conti, DM; Collins, KI; Crane, JD; Dai, F; Deeg, HJ; Evans, P; Grziwa, S; Hatzes, AP; Hirano, T; Horne, K; Huang, CX; Jenkins, JM; Kabáth, P; Kielkopf, JF; Knudstrup, E; Latham, DW; Livingston, J; Luque, R; Mathur, S; Murgas, F; Osborne, HLM; Palle, E; Persson, CM; Rodriguez, JE; Rose, M; Rowden, P; Schwarz, RP; Seager, S; Serrano, LM; Sha, L; Shectman, SA; Shporer, A; Srdoc, G; Stockdale, C; Tan, TG; Teske, JK; Van Eylen, V; Vanderburg, A; Vanderspek, R; Wang, SX; Winn, JN |
| Source: |
Astronomy and Astrophysics , 675 , Article A115. (2023) |
| Publisher Information: |
EDP Sciences |
| Publication Year: |
2023 |
| Collection: |
University College London: UCL Discovery |
| Subject Terms: |
planetary systems; planets and satellites: individual: TOI-1130; techniques: photometric; techniques: radial velocities |
| Description: |
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. |
| Document Type: |
article in journal/newspaper |
| File Description: |
text |
| Language: |
English |
| Relation: |
https://discovery.ucl.ac.uk/id/eprint/10174411/ |
| Availability: |
https://discovery.ucl.ac.uk/id/eprint/10174411/1/aa44617-22.pdf; https://discovery.ucl.ac.uk/id/eprint/10174411/ |
| Rights: |
open |
| Accession Number: |
edsbas.C1D68642 |
| Database: |
BASE |