A compact multiplanet system of three transiting giant planets around TIC 118798035

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F25%3A00643681" target="_blank" >RIV/67985815:_____/25:00643681 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14310/25:00143434

Výsledek na webu

<a href="https://hdl.handle.net/11104/0373780" target="_blank" >https://hdl.handle.net/11104/0373780</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3847/2041-8213/ae2603" target="_blank" >10.3847/2041-8213/ae2603</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A compact multiplanet system of three transiting giant planets around TIC 118798035

Popis výsledku v původním jazyce

We report the discovery and characterization of three transiting giant planets in the TIC 118798035 system. The three planets were identified as transiting candidates from data of the TESS mission and confirmed with ground-based photometric transit observations along with radial velocity variations obtained with FEROS, HARPS, and ESPRESSO. The three planets present transit timing variations (TTVs). We performed an N-body orbital fitting to the TTVs and radial velocities, finding that TIC 118798035 b is a warm low-density Neptune with a mass of 0.0250 +/- 0.0023 MJ, a radius of 0.655 +/- 0.018 RJ, and an orbital period of 11.507 days, TIC 118798035 c is a warm Saturn with a mass of 0.403 +/- 0.024 MJ, a radius of 0.973 +/- 0.023 RJ, and an orbital period of 22.564 days, and TIC 118798035 d is a warm Jupiter with a mass of 0.773 +/- 0.052 MJ, a radius of 0.923 +/- 0.044 RJ, and an orbital period of 48.925 days. The bulk metallicities of the three planets do not fully follow the mass-metallicity correlation found for the giant planets of the solar system, which hints at a somewhat different formation history for the planets of the TIC 118798035 system.

Název v anglickém jazyce

A compact multiplanet system of three transiting giant planets around TIC 118798035

Popis výsledku anglicky

We report the discovery and characterization of three transiting giant planets in the TIC 118798035 system. The three planets were identified as transiting candidates from data of the TESS mission and confirmed with ground-based photometric transit observations along with radial velocity variations obtained with FEROS, HARPS, and ESPRESSO. The three planets present transit timing variations (TTVs). We performed an N-body orbital fitting to the TTVs and radial velocities, finding that TIC 118798035 b is a warm low-density Neptune with a mass of 0.0250 +/- 0.0023 MJ, a radius of 0.655 +/- 0.018 RJ, and an orbital period of 11.507 days, TIC 118798035 c is a warm Saturn with a mass of 0.403 +/- 0.024 MJ, a radius of 0.973 +/- 0.023 RJ, and an orbital period of 22.564 days, and TIC 118798035 d is a warm Jupiter with a mass of 0.773 +/- 0.052 MJ, a radius of 0.923 +/- 0.044 RJ, and an orbital period of 48.925 days. The bulk metallicities of the three planets do not fully follow the mass-metallicity correlation found for the giant planets of the solar system, which hints at a somewhat different formation history for the planets of the TIC 118798035 system.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10303 - Particles and field physics

Projekt

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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

995

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

L43

Kód UT WoS článku

001636295400001

EID výsledku v databázi Scopus

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