Chandra COSMOS: Radio-Selected Star-Forming Galaxies and AGN Catalog

A catalog of radio-selected star-forming galaxy and AGN candidates with X-ray detections from the C-COSMOS survey. The HEASARC merged source tables from a 2012 reference paper, adding a classification parameter to distinguish between 'SFG' and 'AGN' samples. The data was created by the HEASARC in June 2012 based on CDS files and is provided by NASA HEASARC.

Use Cases

• Testing classification schemes for separating star-forming galaxies from AGN based on X-ray and multi-wavelength properties.
• Studying the X-ray/radio luminosity correlation for star-forming galaxies, potentially across different redshifts.
• Comparing X-ray number counts of star-forming galaxies from the COSMOS surveys with data from the Chandra Deep Fields.
• Refining samples of astronomical sources using X-ray based selection criteria discussed in the paper.

Strengths

• Sources are classified as 'SFG' or 'AGN' based on a scheme tested in the reference paper.
• Data originates from the well-known VLA-COSMOS and Chandra C-COSMOS surveys.
• The catalog is hosted and provided by NASA's HEASARC, an authoritative data center.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The description notes that ~30-50% of objects may be composite or misclassified, indicating inherent classification uncertainty.

Provenance

Source

National Aeronautics and Space Administration (NASA), HEASARC

Collection Method

Merged from CDS table J/A+A/542/A16 files table2.dat and table3.dat, which correspond to tables from a referenced astrophysics paper.

Freshness

Last updated 2026-03-13 17:15:00.279144; freshness should be verified.