Stripe 82X: 5,220 X-ray Sources from XMM-Newton Matched to Multi-Wavelength Catalogs

5,220 unique X-ray sources detected by the XMM-Newton telescope in the Sloan Digital Sky Survey Stripe 82 Legacy field, covering 31.3 square degrees. The catalog is matched to multi-wavelength counterparts from SDSS, WISE, UKIDSS, and other surveys, with 88% of sources having a match. The data was released by the National Aeronautics and Space Administration and last updated in March 2026.

Use Cases

• Constraining the growth and evolution of the X-ray source population based on the catalog's flux limits and area coverage.
• Studying obscured high-luminosity active galactic nuclei at high redshift based on the survey's wide area and rich ancillary data.
• Comparing X-ray number count distributions with other surveys like Chandra based on the derived log N - log S relations.
• Analyzing source properties across the electromagnetic spectrum based on matches to SDSS, WISE, GALEX, and other databases.

Strengths

• Covers 31.3 square degrees of sky, approximately doubling the survey area with XMM-Newton cycle AO 13 data.
• Contains 5,220 X-ray sources detected with high significance (> 5 sigma) by XMM-Newton.
• 88% of the sample is matched to a multi-wavelength counterpart from multiple ancillary surveys.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• File formats are listed as BIN and HTML, which may require specialized tools for access and analysis.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

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

Time Range

null

Freshness

Last updated 2026-03-13 19:21:06.488203; freshness should be verified.

Geography

Sloan Digital Sky Survey Stripe 82 Legacy field in the sky.