TOI-6695: A Pair of Near-resonant Massive Planets Observed with TESS from the WINE Survey

TOI-6695: A Pair of Near-resonant Massive Planets Observed with TESS from the WINE Survey

We present the discovery and characterization of a pair of warm Jovian-mass exoplanets orbiting the Sun-like star TOI-6695, based on Transiting Exoplanet Survey Satellite (TESS) transits and precise radial velocity (RV) measurements obtained with FEROS, HARPS, CHIRON, CORALIE, and PFS. The transitin...

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Main Authors: Jan Eberhardt, Trifon Trifonov, Thomas Henning, Marcelo Tala Pinto, Rafael Brahm, Andrés Jordán, Nestor Espinoza, Matías I. Jones, Melissa J. Hobson, Felipe I. Rojas, Martin Schlecker, Lorena Acuña, Remo Burn, Gavin Boyle, Rodrigo Leiva, James McCormac, Nicholas Dunckel, Diana Dragomir, Jeffrey D. Crane, Stephen Shectman, Johanna K. Teske, David Osip, Arvind F. Gupta, Solène Ulmer-Moll, François Bouchy, Monika Lendl, Davide Gandolfi, George R. Ricker, Jon M. Jenkins, Sara Seager, Joshua N. Winn
Format: Article
Language:English
Published: IOP Publishing 2025-01-01
Series:The Astronomical Journal
Subjects:
Exoplanet astronomy
Radial velocity
Transit photometry
Exoplanet detection methods
Online Access:https://doi.org/10.3847/1538-3881/adc44e
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Summary:We present the discovery and characterization of a pair of warm Jovian-mass exoplanets orbiting the Sun-like star TOI-6695, based on Transiting Exoplanet Survey Satellite (TESS) transits and precise radial velocity (RV) measurements obtained with FEROS, HARPS, CHIRON, CORALIE, and PFS. The transiting exoplanet TOI-6695b has an orbital period of ∼80.4 days, a radius of 0.85 R _jup , and a mass of 0.21 M _jup . The outer planet has a minimum mass of 1.45 M _jup and an orbital period of about 242.4 days, confidently constrained by the Doppler time-series data. The TOI-6695 exoplanet system exhibits transit-timing variations due to the dynamical interaction of the planets, which reside near a 3:1 mean-motion resonance. We modeled the TOI-6695 system’s orbital and dynamical configuration by performing self-consistent N -body fits of TESS photometry, ground-based photometry from Observatoire Moana, and precise RV data, all of which are consistent with the presence of a warm Jovian-mass duo of exoplanets.
ISSN:1538-3881

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