Gaia RV Distances with Corrected Parallaxes and Kinematic Data

The dataset provides derived distances and kinematic parameters for stars from the Gaia Radial Velocity (RV) dataset, as described in the associated arXiv paper. It includes expectation values and higher moments for distance probability distributions, corrected parallaxes, and derived spatial coordinates and velocities. The data was created by Ralph Schoenrich of the University of Oxford and is associated with a paper submitted to MNRAS.

Use Cases

• Modeling the three-dimensional structure of the Milky Way based on derived x, y, z coordinates.
• Analyzing stellar kinematics and velocity distributions using U_g, v_phi, and v_z velocity components.
• Studying the relationship between stellar distances and photometric properties using Gmag and B-Rcolour.
• Assessing distance derivation methods by comparing different files containing results under varying assumptions.

Strengths

• Includes corrected parallaxes, addressing known systematic offsets in the Gaia data.
• Provides multiple statistical moments (E_dist, distm2, distm3, distm4) for distance probability distributions.
• Contains derived galactocentric coordinates (R, x, y, z) and full 3D velocity components for kinematic analysis.

Limitations

• The description notes that the applied quality cuts are minimal and 'NOT sufficient to ensure quality of the sample', requiring users to apply additional criteria.
• Row count and dataset size are unknown, which may limit suitability assessment for large-scale projects.
• Last update date is unknown; freshness unverified.

Provenance

Source

Derived from the Gaia mission's Radial Velocity dataset.

Collection Method

Distance derivation under different assumptions to achieve near-zero average distance bias, as per the associated arXiv paper.

Geography

Covers stars observed by the Gaia satellite, with galactic coordinates (gl, gb) provided.