  This document details the first public data release of the HARPS radial
velocities catalog. This data release aims to provide the astronomical
community with a catalog of radial velocities obtained with spectroscopic
observations acquired from 2003 to 2023 with the High Accuracy Radial Velocity
Planet Searcher (HARPS) spectrograph installed at the ESO 3.6m telescope in La
Silla Observatory (Chile), and spanning wavelengths from 3800 to 6900 Angstrom.
The catalog comprises 289843 observations of 6488 unique astronomical objects.
  Radial velocities reported in this catalog are obtained using the HARPS
pipeline, with a typical precision of 0.5 m/s, which is essential for the
search and validation of exoplanets. Additionally, independent radial
velocities measured on the H$\alpha$ spectral line are included, with a typical
error of around 300 m/s suitable for various astrophysical applications where
high precision is not critical. This catalog includes 282294 radial velocities
obtained through the HARPS pipeline and 288972 derived from the H$_\alpha$
line, collectively forming a time-series dataset that provides a historical
record of measurements for each object.
  Further, each object has been cross-referenced with the SIMBAD astronomical
database to ensure accurate identification, enabling users to locate and verify
objects with existing records in astronomical literature. Information provided
for each object includes: astrometric parameters (coordinates, parallaxes,
proper motions, radial velocities), photometric parameters (apparent magnitudes
in the visible and near-infrared), spectral types and object classifications.
