ELAIS S1 Field: 478 X-Ray Sources from XMM-Newton Survey

478 X-ray sources detected by the XMM-Newton satellite in the ELAIS-S1 field, including 395 in the soft energy band and 205 in the hard band. The catalog was created by NASA HEASARC in June 2008 based on observations performed between May and July 2003. It includes analysis of number counts, clustering properties, and the identification of 7 extended sources likely associated with galaxy clusters.

Use Cases

• Study the evolution of the luminosity function of Active Galactic Nuclei (AGNs) based on flux-limited observations in multiple energy bands.
• Analyze the clustering properties of the X-ray active Universe compared to the IR-UV active Universe based on source density maps.
• Identify and characterize extended X-ray sources, such as galaxy clusters, through spectral fits with thermal models.
• Investigate large-scale cosmic structures by examining the spatial distribution of sources relative to identified clusters at redshift z ~ 0.4.

Strengths

• Covers a contiguous area of approximately 0.6 square degrees from four deep, overlapping XMM-Newton pointings.
• Provides flux limits for three specific energy bands: ~5.5e-16 erg cm^-2 s^-1 (0.5-2 keV), ~2e-15 erg cm^-2 s^-1 (2-10 keV), and ~4e-15 erg cm^-2 s^-1 (5-10 keV).
• Includes redshift estimates for extended sources derived from X-ray spectral fits.

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 17:48:27.329201; freshness should be verified.

Provenance

Source

National Aeronautics and Space Administration (NASA HEASARC)

Collection Method

Observations performed with XMM-Newton's European Photon Imaging Camera (EPIC) and two MOS-CCD cameras.

Time Range

Observations performed May 2003 through July 2003.

Freshness

Last updated 2026-03-13 17:48:27.329201

Geography

Central region of the ELAIS-S1 field (coordinates for four pointings provided in J2000).