ELAIS N1 and N2 Fields: Chandra X-Ray Point Source Catalog

Two 75 ks Chandra observations from August 2000 analyzed 233 X-ray point sources in the ELAIS N1 and N2 fields. The catalog, created by NASA HEASARC in February 2007, includes source counts and hardness ratios, revealing an overdensity in N1 and an increasing fraction of hard and galaxy-like sources at fainter fluxes. The survey is conducted in regions with extensive multiwavelength coverage.

Use Cases

• Analyze X-ray source counts and hardness ratios based on the cataloged point sources.
• Study large-scale structure and source variance between fields based on the reported overdensity in N1.
• Investigate the population of obscured galaxies based on the increasing fraction of galaxy-like counterparts at fainter fluxes.
• Cross-reference X-ray sources with multiwavelength data based on the survey's well-studied regions.

Strengths

• Contains 233 X-ray point sources from deep 75 ks Chandra exposures.
• Includes analysis of source counts and hardness ratios, revealing trends with flux.
• Survey conducted in well-studied regions with extensive multiwavelength coverage.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• Two soft extended sources associated with galaxy clusters are explicitly excluded from this point source table.

Provenance

Source

National Aeronautics and Space Administration, NASA HEASARC

Collection Method

Analysis of Chandra ACIS-I, S2, and S4 chip observations.

Time Range

Observations from August 2-4, 2000.

Freshness

Last updated 2026-03-13 19:09:43.208772; freshness should be verified.

Geography

Northern ELAIS regions N1 and N2 (J2000 coordinates provided).