VLA E-CDF-S: Classification of 883 Radio Sources into SFGs and AGNs

A 2014 catalog from NASA HEASARC classifies 883 radio sources detected at 1.4 GHz in the Extended Chandra Deep Field-South. The authors used a combination of Very Large Array radio, Chandra X-ray, and Spitzer mid-infrared data to disentangle star-forming galaxies, radio-quiet, and radio-loud active galactic nuclei. The table also compares host galaxy properties like morphology, optical colors, and stellar masses for the three classes.

Use Cases

• Classifying radio source populations based on multi-wavelength data signatures described in the paper.
• Analyzing the relationship between radio emission and host galaxy properties like morphology and stellar mass.
• Studying the relative prevalence of star-forming galaxies versus active galactic nuclei at sub-mJy flux densities.
• Testing hypotheses on the physical origin of radio emission in different galaxy types.

Strengths

• Based on a deep radio survey reaching a best rms sensitivity of 6 microJansky.
• Contains classifications for 883 distinct radio sources.
• Integrates data from three major observatories: VLA (radio), Chandra (X-ray), and Spitzer (infrared).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

NASA HEASARC, based on a machine-readable table from a paper in the Monthly Notices of the Royal Astronomical Society (MNRAS).

Collection Method

Created by the HEASARC in January 2014 from the authors' published catalog.

Time Range

Observational data likely spans the survey period of the referenced VLA, Chandra, and Spitzer observations.

Freshness

Last updated 2026-03-13 19:44:51.394683; freshness should be verified.

Geography

Covers the Extended Chandra Deep Field-South (E-CDF-S) region of the sky.