Stripe 82X: 1,146 Chandra X-ray Sources Matched to Multi-wavelength Catalogs

1,146 unique X-ray sources detected by the Chandra observatory in the Sloan Digital Sky Survey Stripe 82 Legacy field. The catalog covers 31.3 square degrees and matches 88% of sources to counterparts in SDSS, WISE, GALEX, and other surveys. NASA released this data as part of the Stripe 82 X-ray survey to study the growth and evolution of high-luminosity active galactic nuclei.

Use Cases

• Training models to classify rare, obscured high-luminosity active galactic nuclei based on multi-wavelength features.
• Constraining population growth models for X-ray sources using the derived number counts distribution.
• Studying the interaction between X-ray sources and their host galaxies using matched multi-wavelength data.
• Comparing X-ray survey flux limits and source detection methods between Chandra and XMM-Newton instruments.

Strengths

• Contains 1,146 significantly detected Chandra sources (> 4.5 sigma).
• 88% of the sample is matched to a multi-wavelength counterpart across seven ancillary surveys.
• Covers a wide area of 31.3 square degrees with defined flux limits in soft, hard, and full X-ray bands.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Sources detected by Chandra and XMM-Newton observatories, matched to multi-wavelength catalogs using the maximum likelihood estimator method.

Time Range

null

Freshness

Last updated 2026-03-13 18:29:12.545272; freshness should be verified.

Geography

Sloan Digital Sky Survey Stripe 82 Legacy field (celestial coordinates).