Hidden worlds: A non-transiting candidate planet in the Neptunian desert around the solar-type pulsator KIC 9139163

arXiv:2605.28755 · astro-ph.EP, astro-ph.SR · Submitted 2026-08-24 · Read on arXiv

Sylvain N. Breton, Achrène Dyrek, Carlos Allende Prieto, Andrea Bonfanti, Hans J. Deeg, Rafael A. García, Enric Pallé, Fernando Pérez Hernández, Othman Benomar, Lina Borg, Ilaria Carleo, Clémence Gourvès, Antonino F. Lanza, Kento Masuda, Stéphane Mathis, Savita Mathur, Dinil B. Palakkatharappil, Angela R. G. Santos, Franck Selsis

astro-ph.EP, astro-ph.SR

Submitted: 2026-08-24

Updated: 2026-08-25

Comments: 27 pages, 18 figures. Accepted for publication in A&A

Code: https://github.com/callendeprieto/synple

Project page: https://keplergo.github.io/KeplerScienceWebsite/data/kepler_response_hires1.txt

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Abundance — 4× in this paper · explained in 1 episode
• Aperture — 3× in this paper · explained in 1 episode
• Core — 3× in this paper · explained in 2 episodes
• Degeneracy — 3× in this paper · explained in 3 episodes
• Trace — 3× in this paper · explained in 2 episodes
• Accuracy — 2× in this paper · explained in 1 episode
• Active Regions — 2× in this paper · explained in 1 episode
• James Webb Space Telescope — 2× in this paper
• Markov Chain Monte Carlo — 2× in this paper
• Society of Photo-Optical Instrumentation Engineers — 2× in this paper
• Barycentric Julian Date — 1× in this paper
• Barycentric TESS Julian Date — 1× in this paper
• Bayesian Inference — 1× in this paper · explained in 5 episodes
• Benchmark — 1× in this paper · explained in 2 episodes
• Consistency — 1× in this paper · explained in 3 episodes
• Decoupling — 1× in this paper · explained in 2 episodes
• Floating-Chunk Offset — 1× in this paper
• Hybrid Approach — 1× in this paper · explained in 4 episodes
• Metallicity — 1× in this paper · explained in 3 episodes
• Robustness — 1× in this paper · explained in 5 episodes
• Scaling Laws — 1× in this paper · explained in 4 episodes
• Signal-to-noise ratio (SNR) — 1× in this paper · explained in 2 episodes
• Transmission spectroscopy — 1× in this paper · explained in 2 episodes
• alpha — 1× in this paper · explained in 1 episode

Sources

• A remnant planetary core in the hot-Neptune desert
• From core to envelope: revealing the deep dynamics of stars with two convective zones
• UltraNest -- a robust, general purpose Bayesian inference engine
• On the robustness of analysis techniques for molecular detections using high resolution exoplanet spectroscopy
• Highly reflective white clouds on the western dayside of an exo-Neptune
• Detection of Carbon Monoxide in the Atmosphere of WASP-39b Applying Standard Cross-Correlation Techniques to JWST NIRSpec G395H Data
• exoplanet: Gradient-based probabilistic inference for exoplanet data & other astronomical time series
• TLUSTY and SYNSPEC Users's Guide IV: Upgraded Versions 208 and 54
• Detection of the phase curve and occultation of WASP-100b with TESS
• Spectral binning of precomputed correlated-k coefficients
• Dynamic mineral clouds on HD 189733b I. 3D RHD with kinetic, non-equilibrium cloud formation
• Density, not radius, separates rocky and water-rich small planets orbiting M dwarf stars
• TOI-2196 b: Rare planet in the hot Neptune desert transiting a G-type star
• Muted Features in the JWST NIRISS Transmission Spectrum of Hot-Neptune LTT 9779 b
• On the Unique Solution of Planet and Star Parameters from an Extrasolar Planet Transit Light Curve
• The effect of rotation and tidal heating on the thermal lightcurves of Super Mercuries
• Atmospheric Circulation of Terrestrial Exoplanets
• Connecting photometric and spectroscopic granulation signals with CHEOPS and ESPRESSO
• Transits and Occultations
• Detection of iron emission lines and a temperature inversion on the dayside of the ultra-hot Jupiter KELT-20b

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