SWIRE Chandra Survey: Infrared and X-Ray Source Catalog for ELAIS N1 Region

122 X-ray sources detected in the 0.5-8 keV band within a 17' x 17' Chandra ACIS-I image of the ELAIS N1 region. This table contains results from deep combined observations with the Spitzer and Chandra telescopes, cross-correlating 102 infrared sources from the Spitzer Wide-Area Infrared Extragalactic Survey (SWIRE) with X-ray counterparts. The data were collected by NASA's Spitzer telescope in early 2004 and the Chandra X-ray Observatory for 75 ks, aiming to study active galactic nuclei and the cosmic infrared background.

Use Cases

• Cross-matching infrared and X-ray source catalogs based on the described 5" search radius for astrometric correlation.
• Investigating AGN and starburst diagnostics based on combined infrared and X-ray emission properties.
• Analyzing the population of faint X-ray sources contributing to the X-ray background (XRB) mentioned in the survey goals.
• Studying source detection flux limits in different energy bands (0.5-2 keV, 2-8 keV) as described in the observation summary.

Strengths

• Combines data from two major space observatories (Spitzer IR and Chandra X-ray) for multi-wavelength analysis.
• Specifies precise detection flux limits (e.g., 2.3 x 10^-15 erg s^-1 cm^-2 in the 0.5-8 keV band) and a 71.5 ks effective observation time.
• Provides counts for cross-matched sources (102 IRAC and 59 MIPS sources with Chandra counterparts).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data is focused on a specific 286 square arcmin area (ELAIS N1), limiting spatial generalizability.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Observational data from the Spitzer IRAC and MIPS instruments and the Chandra ACIS-I X-ray instrument, cross-correlated using a near-neighbor search.

Time Range

Observations taken in January and early February 2004.

Freshness

Last updated 2026-03-13 17:40:45.249155; freshness should be verified.

Geography

Centered on the ELAIS N1 region at position (16h 00m, +59d 01').