Gaia Data Release 1. Cross-match with external catalogues - Algorithm and results

Abstract

Although the Gaia catalogue on its own will be a very powerful tool, it is the combination of this highly accurate archive with other archives that will truly open up amazing possibilities for astronomical research. The advanced interoperation of archives is based on cross-matching, leaving the user with the feeling of working with one single data archive. The data retrieval should work not only across data archives, but also across wavelength domains. The first step for seamless data access is the computation of the cross-match between Gaia and external surveys. The matching of astronomical catalogues is a complex and challenging problem both scientifically and technologically (especially when matching large surveys like Gaia). We describe the cross-match algorithm used to pre-compute the match of Gaia Data Release 1 (DR1) with a selected list of large publicly available optical and IR surveys. The overall principles of the adopted cross-match algorithm are outlined. Details are given on the developed algorithm, including the methods used to account for position errors, proper motions, and environment; to define the neighbours; and to define the figure of merit used to select the most probable counterpart. Statistics on the results are also given. The results of the cross-match are part of the official Gaia DR1 catalogue.

18 pages, 8 figures. Accepted for publication by A&A

References in corpus (15)

• The Wide-field Infrared Survey Explorer (WISE): Mission Description and Initial On-orbit Performance
• The Gaia mission
• HEALPix -- a Framework for High Resolution Discretization, and Fast Analysis of Data Distributed on the Sphere
• The Eleventh and Twelfth Data Releases of the Sloan Digital Sky Survey: Final Data from SDSS-III
• Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties
• The Ninth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-III Baryon Oscillation Spectroscopic Survey
• The Fourth US Naval Observatory CCD Astrograph Catalog (UCAC4)
• The PPMXL catalog of positions and proper motions on the ICRS. Combining USNO-B1.0 and 2MASS
• The Second-Generation Guide Star Catalog: Description and Properties
• A Catalog of Northern Stars With Annual Proper Motions Larger Than 0.15 Seconds of Arc (LSPM catalog - North)
• Gaia Data Release 1: Catalogue validation
• PPM-Extended (PPMX) - a catalogue of positions and proper motions
• The First U.S. Naval Observatory Robotic Astrometric Telescope Catalog (URAT1)
• Probabilistic multi-catalogue positional cross-match
• Cross-correlation of the 2XMMi catalogue with Data Release 7 of the Sloan Digital Sky Survey

Cited by in corpus (32)

• Stellar and substellar companions from Gaia EDR3 -- Proper motion anomaly and resolved common proper motion pairs
• 3D maps of interstellar dust in the Local Arm: using $Gaia$, 2MASS and APOGEE-DR14
• Gaia Data Release 2. Cross-match with external catalogues - Algorithms and results
• A Morphological Classification Model to Identify Unresolved PanSTARRS1 Sources: Application in the ZTF Real-Time Pipeline
• Identification of Young Stellar Object candidates in the $Gaia$ DR2 x AllWISE catalogue with machine learning methods
• Empirical photometric calibration of the Gaia Red Clump: colours, effective temperature and absolute magnitude
• The empirical Gaia G-band extinction coefficient
• Survey of Surveys I: The largest catalogue of radial velocities for the Galaxy
• New ultra-cool and brown dwarf candidates in Gaia DR2
• On the use of field RR Lyrae as Galactic probes: I. The Oosterhoff dichotomy based on fundamental variables
• SsODNet: The Solar system Open Database Network
• Gaia Data Release 3: A Golden Sample of Astrophysical Parameters
• A Word to the WISE: Confusion is Unavoidable for WISE-selected Infrared Excesses
• The Gaia EDR3 view of Johnson-Kron-Cousins standard stars: the curated Landolt and Stetson collections
• Estimating stellar ages and metallicities from parallaxes and broadband photometry - successes and shortcomings
• The ESA Gaia Archive: Data Release 1
• Mapping young stellar populations towards Orion with Gaia DR1
• Searching for central stars of planetary nebulae in Gaia DR2
• Improving \textsl{Gaia} parallax precision with a data-driven model of stars
• Machine Learning Classification of Gaia Data Release 2
• Searching for new solar twins: The Inti survey for the Northern Sky
• Distances to nearby molecular clouds traced by young stars
• AXS: A framework for fast astronomical data processing based on Apache Spark
• A Preliminary Calibration of the JAGB Method Using Gaia EDR3
• The Gaia-WISE Extragalactic Astrometric Catalog
• A Contaminant-Free Catalogue of Gaia DR2-WISE Galactic Plane Matches: Including the Effects of Crowding in the Cross-Matching of Photometric Catalogues
• Predicting Astrometric Microlensing Events from Gaia DR3
• Survey of Surveys. II. Stellar parameters for 23 millions of stars
• The Survey of Surveys: machine learning for stellar parametrization
• Evidence for Coupling of Evolved Star Atmospheres and Spiral Arms of the Milky Way
• A rotation-based census of blue lurker candidates in open clusters
• Mapping the Milky Way with Gaia Bp/Rp spectra-IV: the broken and asymmetric density profile of the stellar disk traced by a large sample of red clumps