The Neptunian ridge planet WASP-156 b does not have a polar orbit

arXiv:2605.27291 · astro-ph.EP, astro-ph.SR · Submitted 2026-05-26 · Read on arXiv

astro-ph.EP, astro-ph.SR

Submitted: 2026-05-26

Updated: 2026-08-27

Comments: Accepted for publication in MNRAS

Code: https://github.com/alixviolet/PAWS

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

Terminology

• Aligned Orbit — 13× in this paper · explained in 1 episode
• Alignment — 4× in this paper · explained in 1 episode
• Aperture — 4× in this paper · explained in 1 episode
• Calibration — 4× in this paper · explained in 7 episodes
• Aperture Photometry — 3× in this paper · explained in 1 episode
• Metallicity — 2× in this paper · explained in 3 episodes
• Population Synthesis — 2× in this paper · explained in 2 episodes
• Society of PhotoOptical Instrumentation Engineers — 2× in this paper
• Bayesian Framework — 1× in this paper · explained in 3 episodes
• Clustering — 1× in this paper · explained in 2 episodes
• Core — 1× in this paper · explained in 2 episodes
• Degeneracy — 1× in this paper · explained in 3 episodes
• ESPRESSO Data Reduction Software2 — 1× in this paper
• European Space Agency — 1× in this paper
• Trace — 1× in this paper · explained in 2 episodes
• UK Science and Technology Facilities Council — 1× in this paper

Sources

• The TESS All-Sky Rotation Survey: Periods for 1,046,317 Stars Within 500 pc
• A Hierarchical Bayesian Framework for Inferring the Stellar Obliquity Distribution
• POSEIDON I: The Dynamical Origins of Transiting Neptunes
• ShaneAO: wide science spectrum adaptive optics system for the Lick Observatory
• The Habitable-Zone Planet Finder: A Stabilized Fiber-Fed NIR Spectrograph for the Hobby-Eberly Telescope
• Commissioning ShARCS: the Shane Adaptive optics infraRed Camera-Spectrograph for the Lick Observatory 3-m telescope
• Development and construction of MAROON-X
• MAROON-X: A Radial Velocity Spectrograph for the Gemini Observatory
• On-sky commissioning of MAROON-X: A new precision radial velocity spectrograph for Gemini North
• Ponderings on the Possible Preponderance of Perpendicular Planets

Related papers

• PDS 70 c and SR 12 c: Observational Constraints on Giant-Planet and Satellite Formation
• Two-stage disruption of resonant chains
• Detectability of resolved hydrogen lines from the accretion shock at gas giants and their CPDs
• Binary-lens Microlensing Degeneracy: Impact on Planetary Sensitivity and Mass-ratio Function
• Atmospheric escape fractionates secondary but not primary atmospheres
• The Occurrence Rate of Nearby Planetary Companions to Hot Jupiters