VLA Lockman Hole 3-GHz Radio Source Catalog with 558 Sources

558 radio sources detected at 3 GHz in the Lockman Hole North region using the Karl G. Jansky Very Large Array. The catalog includes spectral index estimates, source counts, and cross-matches with X-ray, optical, infrared, and redshift catalogs, classifying sources as radio-loud AGN, radio-quiet AGN, or star-forming galaxies. NASA HEASARC created this table in April 2017 based on observations from 2012.

Use Cases

• Classifying radio sources into AGN and star-forming galaxies based on cross-matched multi-wavelength data.
• Analyzing spectral index trends across flux density based on the reported flattening with decreasing flux density.
• Comparing source count estimation methods using the traditional count and P(D) confusion analysis presented.
• Studying the properties of radio-loud and radio-quiet AGN populations identified in the catalog.

Strengths

• Catalog contains 558 sources detected above a 5-sigma threshold.
• Image has a high resolution of 8 arcseconds and a low instrumental noise of 1.01 microJy/beam rms.
• Sources are classified with specific percentages: 10% radio-loud AGN, 28% radio-quiet AGN, 58% star-forming galaxies.
• Includes cross-matches with X-ray, optical, infrared, radio, and redshift catalogs for multi-wavelength analysis.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is known (558), but the number of features per row is unknown, which may limit suitability assessment.

Provenance

Source

NASA HEASARC, based on CDS Catalog J/MNRAS/462/2934.

Collection Method

Observations made with the VLA in C configuration at S band (2-4 GHz) with roughly 50 hours of on-source time.

Time Range

Observations were made in 2012.

Freshness

Last updated 2026-03-13 19:42:55.068191; freshness should be verified.

Geography

Covers the Lockman Hole North region in the sky.