Published July 11, 2025 | Version Version 1.0
Dataset Open

Euclid Quick Data Release (Q1): The active Galaxies of Euclid

Authors/Creators

  • 1. ROR icon University of Bristol

Contributors

  • 1. ROR icon University of Bristol
  • 2. ROR icon Roma Tre University
  • 3. ROR icon University of Helsinki
  • 4. ROR icon Astronomical Observatory of Rome
  • 5. IRA-INAF
  • 6. ROR icon Leiden Observatory
  • 7. ROR icon Arcetri Astrophysical Observatory
  • 8. ROR icon Osservatorio astronomico di Bologna
  • 9. INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna
  • 10. ROR icon Max Planck Institute for Extraterrestrial Physics
  • 11. Osservatorio di Capodimonte
  • 12. ROR icon University of Liège
  • 13. ROR icon National Institute for Astrophysics
  • 14. ROR icon University of Groningen

Description

We present three catalogues of Euclid-selected AGN candidates, each corresponding to a separate Euclid field: North, South, and Fornax. The sources have been cross-matched with external surveys including Gaia, GALEX, WISE_AllWISE, DES, SDSS, and DESI. Each entry includes the Euclid source ID, coordinates (RA, Dec), and the corresponding IDs and positions from the matched surveys. When available, spectroscopic redshifts from DESI and SDSS are also included.
In addition to IDs and positional data, the catalogues contain quality flags (good_flags) and classification labels to distinguish stellar and AGN candidates. These labels are based on a range of photometric and spectroscopic selection criteria applied during source identification.

Files

README.txt

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Additional details

Identifiers

arXiv
arXiv:2503.15320

Related works

Is supplement to
Publication: arXiv:2503.15320 (arXiv)

Dates

Accepted
2025-06-16
Accepted to Astronomy and Astrophysics

References

  • 2013wise.rept....1C
  • 2017ApJS..230...24B
  • 2018ApJS..234...23A
  • 2021ApJS..255...20A
  • 2022ApJS..259...35A
  • 2023A&A...674A...1G
  • 2024A&A...691A...1E
  • 2024AJ....168...58D
  • 2024ApJ...964...69S
  • 2024ApJS..271...54F
  • arXiv:2503.15306
  • arXiv:2503.14141
  • arXiv:2503.15302