TOI-4504: Exceptionally large transit timing variations induced by two resonant warm gas giants in a three-planet system
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F25%3A00617101" target="_blank" >RIV/67985815:_____/25:00617101 - isvavai.cz</a>
Alternative codes found
RIV/00216224:14310/25:00141189
Result on the web
<a href="https://hdl.handle.net/11104/0365933" target="_blank" >https://hdl.handle.net/11104/0365933</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3847/2041-8213/ad9a53" target="_blank" >10.3847/2041-8213/ad9a53</a>
Alternative languages
Result language
angličtina
Original language name
TOI-4504: Exceptionally large transit timing variations induced by two resonant warm gas giants in a three-planet system
Original language description
We present a joint analysis of transit timing variations (TTVs) and Doppler data for the transiting exoplanet system TOI-4504. TOI-4504 c is a warm Jupiter-mass planet that exhibits the largest known TTVs, with a peak-to-node amplitude of similar to 2 days, the largest value ever observed, and a superperiod of similar to 930 days. TOI-4504 b and c were identified in public Transiting Exoplanet Survey Satellite (TESS) data, while the TTVs observed in TOI-4504 c, together with radial velocity (RV) data collected with FEROS, allowed us to uncover a third, nontransiting planet in this system, TOI-4504 d. We were able to detect transits of TOI-4504 b in the TESS data with a period of 2.4261 +/- 0.0001 days and derive a radius of 2.69 +/- 0.19 R-circle plus. The RV scatter of TOI-4504 was too large to constrain the mass of TOI-4504 b, but the RV signals of TOI-4504 c and d were sufficiently large to measure their masses. The TTV+RV dynamical model we apply confirms TOI-4504 c as a warm Jupiter planet with an osculating period of 82.54 +/- 0.02 days, a mass of 3.77 +/- 0.18 M-J, and a radius of 0.99 +/- 0.05 R-J, while the nontransiting planet TOI-4504 d has an orbital period of 40.56 +/- 0.04 days and a mass of 1.42(-0.06)(+0.07)M(J). We present the discovery of a system with three exoplanets: a hot sub-Neptune and two warm Jupiter planets. The gas giant pair is stable and likely locked in a first-order 2:1 mean-motion resonance (MMR). The TOI-4504 system is an important addition to MMR pairs, whose increasing occurrence supports a smooth migration into a resonant configuration during the protoplanetary disk phase.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
<a href="/en/project/LTT20015" target="_blank" >LTT20015: PLATOSpec ground based support of space missions PLATO and TESS - new Czech spectrograph in collaboration with European Southern Observatory</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astrophysical Journal Letters
ISSN
2041-8205
e-ISSN
2041-8213
Volume of the periodical
978
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
16
Pages from-to
L22
UT code for WoS article
001412687000001
EID of the result in the Scopus database
2-s2.0-85216095336