A pair of warm giant planets near the 2:1 mean motion resonance around the K-dwarf star TOI-2202

Abstract

TOI-2202 b is a transiting warm Jovian-mass planet with an orbital period of P=11.91 days identified from the Full Frame Images data of five different sectors of the TESS mission. Ten TESS transits of TOI-2202 b combined with three follow-up light curves obtained with the CHAT robotic telescope show strong transit timing variations (TTVs) with an amplitude of about 1.2 hours. Radial velocity follow-up with FEROS, HARPS and PFS confirms the planetary nature of the transiting candidate (a${}_{\mathrm{b}}$ = 0.096 $\pm$ 0.002 au, m${}_{\mathrm{b}}$ = 0.98 $\pm$ 0.06 M${}_{\mathrm{Jup}}$), and dynamical analysis of RVs, transit data, and TTVs points to an outer Saturn-mass companion (a${}_{\mathrm{c}}$ = 0.155 $\pm$ 0.003 au, m${}_{\mathrm{c}}$= $0.37\pm 0.10$ M${}_{\mathrm{Jup}}$) near the 2:1 mean motion resonance. Our stellar modeling indicates that TOI-2202 is an early K-type star with a mass of 0.82 M${}_{\odot }$, a radius of 0.79 R${}_{\odot }$, and solar-like metallicity. The TOI-2202 system is very interesting because of the two warm Jovian-mass planets near the 2:1 MMR, which is a rare configuration, and their formation and dynamical evolution are still not well understood.

Accepted for publication in AJ

References in corpus (40)

• The Gaia mission
• The Transiting Exoplanet Survey Satellite
• The generalised Lomb-Scargle periodogram. A new formalism for the floating-mean and Keplerian periodograms
• DHP Framework: Digital Health Passports Using Blockchain -- Use case on international tourism during the COVID-19 pandemic
• Spectrum radial velocity analyser (SERVAL). High-precision radial velocities and two alternative spectral indicators
• The TESS Objects of Interest Catalog from the TESS Prime Mission
• Assessing statistical significance of periodogram peaks
• Make Super-Earths, Not Jupiters: Accreting Nebular Gas onto Solid Cores at 0.1 AU and Beyond
• Precise Radial Velocities of Giant Stars VII. Occurrence Rate of Giant Extrasolar Planets as a Function of Mass and Metallicity
• Transit Least Squares: Optimized transit detection algorithm to search for periodic transits of small planets
• CERES: A Set of Automated Routines for Echelle Spectra
• On the formation of planetary systems via oligarchic growth in thermally evolving viscous discs
• A public HARPS radial velocity database corrected for systematic errors
• TTVFast: An efficient and accurate code for transit timing inversion problems
• Cool Jupiters greatly outnumber their toasty siblings: Occurrence rates from the Anglo-Australian Planet Search
• AMD-stability and the classification of planetary systems
• Accounting for velocity jitter in planet search surveys
• Evidence for Planet-Planet Scattering in Upsilon Andromedae
• Planet-planet scattering in planetesimal disks
• Measurement of planet masses with transit timing variations due to synodic "chopping" effects
• ZASPE: A Code to Measure Stellar Atmospheric Parameters and their Covariance from Spectra
• TESS delivers its first Earth-sized planet and a warm sub-Neptune
• The path to instability in compact multi-planetary systems
• Bias and robustness of eccentricity estimates from radial velocity data
• The Effect of Conjunctions on the Transit Timing Variations of Exoplanets
• The eccentricity distribution of giant planets and their relation to super-Earths in the pebble accretion scenario
• Hot, rocky and warm, puffy super-Earths orbiting TOI-402 (HD 15337)
• NGTS-11 b / TOI-1847 b: A transiting warm Saturn recovered from a TESS single-transit event
• TOI-481 b & TOI-892 b: Two long period hot Jupiters from the Transiting Exoplanet Survey Satellite
• Warm Jupiters in TESS Full-Frame Images: A Catalog and Observed Eccentricity Distribution for Year 1
• Precise transit and radial-velocity characterization of a resonant pair: a warm Jupiter TOI-216c and eccentric warm Neptune TOI-216b
• A Highly Eccentric Warm Jupiter Orbiting TIC 237913194
• TOI-216b and TOI-216c: Two warm, large exoplanets in or slightly wide of the 2:1 orbital resonance
• TESS Reveals a Short-period Sub-Neptune Sibling (HD 86226c) to a Known Long-period Giant Planet
• N-body simulations of planet formation via pebble accretion II. How various giant planets form
• Disentangling 2:1 resonant radial velocity orbits from eccentric ones and a case study for HD 27894
• Three planets around HD 27894. A close-in pair with a 2:1 period ratio and an eccentric Jovian planet at 5.4 AU
• Two Jovian planets around the giant star HD202696. A growing population of packed massive planetary pairs around massive stars?
• Orbital stability of compact three-planet systems, I: Dependence of system lifetimes on initial orbital separations and longitudes
• Revisiting the HD 21749 Planetary System with Stellar Activity Modeling

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