Year: 2026
Type: preprint
Abstract: We present the Active Galactic Nuclei Database (AGN-DB), a comprehensive, multi-wavelength catalog compiled from more than 100 publicly available AGN catalogs and samples released by the end of 2025, spanning radio to $γ$-ray wavelengths. The database contains approximately 8.1 million unique sources, approximately 7.8 million of which remain after flagging stellar contaminants, and approximately 6.8 million of these are classified as AGN. Source cross-matching across catalogs is performed using Lyra, a Bayesian likelihood-ratio framework that jointly considers positional uncertainties, source densities, and photometric information to compute posterior match probabilities. The resulting catalog provides astrometric coordinates, redshifts, photometry, and classifications for each unique source. All multi-catalog provenance is preserved. For every property, we store the full array of values and originating catalog identifiers, enabling multi-epoch and multi-survey analyses. In this paper, we describe the AGN-DB pipeline, including the cross-matching methodology, and present the statistical properties of the v1.0 catalog. AGN-DB is designed to enable population studies, spectral energy distribution modeling, AGN classification, and variability analyses at an unprecedented scale. Its pipeline is designed to facilitate the integration of new catalogs, allowing AGN-DB to be updated regularly, with releases planned at least annually.
Source: arXiv (Cornell University)
DOI: 10.13016/m2mxsv-cca5
Authors: Peca, Alessandro, Cappelluti, Nico, Urry, C. Megan, Hu, Zhongtian, Bonnell, Jerry R., McKeown, Jack, Cerini, Giulia, Sun, Xulei, Pacucci, Fabio, Turner, Tracey Jane, Boorman, Peter G., Ghosh, Aritra, Auge, Connor, Böttger, Rebeka L., Foord, Adi, Galeazzi, Massimiliano, Kartaltepe, Jeyhan S., Kilmarrin, Iver Warburton, Kirkpatrick, Allison, Koss, Michael J., LaMassa, Stephanie, Mahmudunnobe, Md, Marchesi, Stefano, Marcotulli, Lea, Moskowitz, Isaac, Natarajan, Priyamvada, Ogihara, Mitsunori, Powell, Meredith, Sanders, David, Sicilian, Dominic, Tian, Chuan, Treister, Ezequiel
Institutions: Yale University, University of Miami, TU Wien, California Institute of Technology, Jet Propulsion Laboratory, Center for Astrophysics Harvard & Smithsonian, Eureka Scientific, Max Planck Institute for Extraterrestrial Physics, University of Washington, University of Maryland, Baltimore County, Rochester Institute of Technology, Space Science Institute, Wayne State University, Deutsches Elektronen-Synchrotron DESY, Frost Institute for Data Science & Computing, Leibniz Institute for Astrophysics Potsdam, University of Hawaiʻi at Mānoa, University of Hawaii System, University of Tarapacá
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7211891747