XHIP: An Extended Hipparcos Compilation

TL;DR

The XHIP database compiles extensive stellar data, including classifications, velocities, and abundances, for Hipparcos stars, integrating multiple sources to facilitate advanced astronomical research.

Contribution

This work creates a comprehensive, cross-referenced stellar database with extensive parameters, enhancing data accessibility and consistency for the astronomical community.

Findings

Minimal kinetic bias in the compiled data

Extensive spectral and velocity data for over 116,000 stars

Inclusion of exoplanet host star identifications

Abstract

We present the Extended Hipparcos Compilation (XHIP), a database of all stars in the New Reduction of the Hipparcos Catalog extensively cross-referenced with data from a broad survey of presently available sources. The resulting collection uniquely assigns 116,096 spectral classifications, 46,392 radial velocities, and 18,549 homogenized iron abundances [Fe/H] to Hipparcos stars. Stellar classifications from SIMBAD, indications of multiplicity from CCDM or WDS, stellar ages from the Geneva-Copenhagen Survey III, supplemental photometry from 2MASS and SIMBAD, and identifications of exoplanet host stars are also included. Parameters for solar encounters and Galactic orbits are calculated for a kinematically complete subset. Kinetic bias is found to be minimal. Our compilation is available through the Centre de Donn\'ees astronomiques de Strasbourg (CDS) as Catalog V/137B.