Chandra Deep Field South: AGN X-ray Spectral Properties Catalog

321 extragalactic sources from the Chandra Deep Field South 1 Ms catalog have detailed X-ray spectral properties analyzed, including power-law slopes and intrinsic absorption. The analysis uses optical spectroscopy and photometric redshifts, with a weighted mean power-law slope of 1.75 +/- 0.02. This table was created by NASA's HEASARC in August 2007 based on published catalog data.

Use Cases

• Investigating the correlation between X-ray spectral index and intrinsic absorption based on the analysis of 82 bright sources.
• Studying the redshift evolution of absorbed AGN fractions based on derived N_H values for the full sample.
• Cross-matching optical AGN classifications (type I/II) with X-ray spectral properties to validate correspondence.
• Analyzing the distribution of power-law slopes and intrinsic dispersion reported in the spectral fits.

Strengths

• Analysis includes 321 extragalactic sources with optical spectroscopy and photometric redshifts.
• Provides a weighted mean power-law slope (1.75 +/- 0.02) and intrinsic dispersion (0.30) for the sample.
• Reports a specific fraction (~75%) of absorbed sources and its behavior with redshift.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect observational bias inherent to the Chandra Deep Field South survey.

Provenance

Source

NASA HEASARC, based on CDS Catalog J/A+A/451/457 and Giacconi et al. 2002.

Collection Method

Detailed X-ray spectral analysis of sources from the Chandra Deep Field South 1 Ms catalog.

Time Range

Observational data from the Chandra Deep Field South survey.

Freshness

Last updated 2026-03-13 18:07:59.593728; freshness should be verified.

Geography

Extragalactic, focused on the Chandra Deep Field South region of the sky.