AMI Galactic Plane Survey: 3,503 Radio Sources at 16 GHz

The Arcminute Microkelvin Imager (AMI) Galactic Plane Survey provides arcminute-resolution images of the outer Galactic plane at milli-Jansky sensitivity. This first data release catalog contains 3,503 radio sources detected above 5 sigma from 868 square degrees of sky, observed at a central frequency of 15.75 GHz. The NASA HEASARC ingested this catalog in 2013 based on data from the CDS.

Use Cases

• Identify and catalog radio sources in the Galactic plane based on peak flux density and signal-to-noise thresholds.
• Study the distribution and properties of centimeter-wave emission in the outer Galaxy based on the survey's large spatial coverage.
• Train machine learning models for radio source detection based on drift-scan observation data and mapping techniques.
• Cross-match radio sources with other wavelength surveys based on precise celestial coordinates.

Strengths

• Catalog contains 3,503 detected radio sources, providing a substantial sample for analysis.
• Survey covers a large area of 868 square degrees of the Galactic plane.
• Described as the most sensitive large-extent Galactic plane survey at frequencies greater than 1.4 GHz.
• Positions were updated in September 2013 for improved precision.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data is from a 2013 release; freshness should be verified for current research needs.

Provenance

Source

National Aeronautics and Space Administration (NASA HEASARC), based on CDS Catalog J/MNRAS/429/3330.

Collection Method

Drift-scan observations with the Arcminute Microkelvin Imager (AMI), followed by mapping and source extraction.

Time Range

null

Freshness

Last updated 2026-03-13 17:36:02.563531; freshness should be verified.

Geography

Covers the Galactic plane above 40 degrees Declination (76 to 170 degrees Galactic Longitude) between Galactic Latitudes of -5 to +5 degrees.