TOI-1130: A photodynamical analysis of a hot Jupiter in resonance with an inner low-mass planet
Article
Huang, C. X.. 2023. "TOI-1130: A photodynamical analysis of a hot Jupiter in resonance with an inner low-mass planet." Astronomy and Astrophysics: a European journal. 675. https://doi.org/10.1051/0004-6361/202244617
Article Title | TOI-1130: A photodynamical analysis of a hot Jupiter in resonance with an inner low-mass planet |
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ERA Journal ID | 1050 |
Article Category | Article |
Authors | Huang, C. X. |
Journal Title | Astronomy and Astrophysics: a European journal |
Journal Citation | 675 |
Article Number | A115 |
Number of Pages | 19 |
Year | 2023 |
Publisher | EDP Sciences |
Place of Publication | France |
ISSN | 0004-6361 |
1432-0746 | |
Digital Object Identifier (DOI) | https://doi.org/10.1051/0004-6361/202244617 |
Web Address (URL) | https://www.aanda.org/articles/aa/abs/2023/07/aa44617-22/aa44617-22.html |
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 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. © 2023 Journal of Oral Medicine and Oral Surgery. All rights reserved. |
Keywords | Planetary systems; planets and satellites: individual; TOI-1130; techniques: photometric; techniques: radial velocities |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Byline Affiliations | Centre for Astrophysics |
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https://research.usq.edu.au/item/z261w/toi-1130-a-photodynamical-analysis-of-a-hot-jupiter-in-resonance-with-an-inner-low-mass-planet
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