SXDS: 1,245 X-Ray Sources from Subaru/XMM-Newton Deep Survey

1,245 X-ray sources, including 32 extended-source candidates, were detected across a 1.14 square-degree area of the sky. The catalog was created by NASA HEASARC in November 2008 from observations in the 0.2-10 keV band, with sensitivity limits ranging from 6e-16 to 5e-15 ergs cm^-2 s^-1. It bridges the flux gap between Chandra deep surveys and brighter surveys, and its analysis includes clustering signals and spatial variation in source density.

Use Cases

• Analyze the spatial clustering of X-ray sources based on the autocorrelation function results mentioned in the description.
• Study the log N-log S relation and its spatial variation across the survey's seven pointings.
• Identify and characterize extended-source candidates within the catalog.
• Compare source populations and flux distributions with other X-ray surveys like Chandra.
• Investigate the correlation length of sources in different energy bands (0.5-2 keV vs. 2-10 keV).

Strengths

• Contains 1,245 distinct X-ray sources detected with a high confidence level (>=7 detection likelihood, 99.91%).
• Covers a continuous area of 1.14 square degrees with observations in four specific energy bands (0.5-2, 0.5-4.5, 2-10, 4.5-10 keV).
• Includes 32 extended-source candidates, allowing for analysis of different source types.
• Provides specific sensitivity limits for each energy band and a measured correlation length for clustering in the 0.5-2 keV band.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last updated 2026-03-13 18:10:00.764875; freshness should be verified.

Provenance

Source

NASA HEASARC, based on Table 2 from the Astrophysical Journal.

Collection Method

Combined images from the EPIC pn and MOS cameras on XMM-Newton across seven pointings.

Time Range

Observational date range not specified; catalog created in November 2008.

Freshness

Last updated 2026-03-13 18:10:00.764875; freshness should be verified.

Geography

Centered at R.A.= 02h 18m and Dec = -05 degrees (celestial coordinates).