TOI-4504: Exceptionally large transit timing variations induced by two resonant warm gas giants in a three-planet system

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/00216224:14310/25:00141189

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

TOI-4504: Exceptionally large transit timing variations induced by two resonant warm gas giants in a three-planet system

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

TOI-4504: Exceptionally large transit timing variations induced by two resonant warm gas giants in a three-planet system

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/LTT20015" target="_blank" >LTT20015: PLATOSpec pozemní podpora vesmírných misí PLATO a TESS - nový český spektrograf ve spolupráci s Evropskou jižní observatoří</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Astrophysical Journal Letters

ISSN

2041-8205

e-ISSN

2041-8213

Svazek periodika

978

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

16

Strana od-do

L22

Kód UT WoS článku

001412687000001

EID výsledku v databázi Scopus

2-s2.0-85216095336