TOI-2000 System: MCMC Posterior Samples for Planetary and Stellar Parameters

Hamiltonian Monte Carlo samples of the posterior distribution for planetary and stellar parameters from the TOI-2000 exoplanet system discovery paper. The dataset is stored in NetCDF format and is intended to be read by the Python package ArviZ. The research was authored by Lizhou Sha from the University of Wisconsin–Madison.

Use Cases

• Analyze posterior distributions of planetary masses and radii based on the reported parameters for TOI-2000 b and c.
• Benchmark sampling efficiency of Hamiltonian Monte Carlo compared to traditional MCMC methods as described in the paper.
• Constrain planetary formation histories by modeling the orbital parameters of the hot Saturn and its inner mini-Neptune companion.
• Prepare atmospheric characterization targets for JWST by studying the posterior constraints on the system's brightest host star in the V band.

Strengths

• Posterior samples are derived from a confirmed two-planet system with direct mass measurements from HARPS radial velocities.
• The host star is described with specific parameters, including a V magnitude of 10.98 and a metallicity ([Fe/H]) of 0.439.
• The dataset is associated with a published scientific paper detailing the discovery and analysis methodology.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

Paper: 'TESS Spots a Mini-Neptune Interior to a Hot Saturn in the TOI-2000 System' by Lizhou Sha et al.

Collection Method

Posterior samples generated via Hamiltonian Monte Carlo under the PyMC framework, using radial velocity and transit data from TESS and HARPS.

Geography

Observations of the star TOI-2000, located 174 parsecs away.