COSMOS VLA Deep Catalog: Radio Observations of 2 Million Galaxies

Over 2 million galaxies are detected in the COSMOS survey, spanning 75% of the age of the universe. The VLA Deep Catalog combines 275 hours of 1.4 GHz observations from 2004-2005 with an additional 62 hours from 2006, covering a 2 square degree equatorial field. The final combined survey has reached a sensitivity of micro-Jansky per beam in the central region at a resolution of 2.5 arcseconds.

Use Cases

• Training galaxy detection and classification models based on deep radio imaging.
• Analyzing galaxy evolution as a function of redshift and environment based on the survey's stated purpose.
• Cross-matching radio sources with multi-wavelength data from Hubble, Spitzer, and other telescopes mentioned in the description.
• Studying large-scale structure in the universe using the survey's wide, deep field.

Strengths

• Over 2 million galaxies detected, providing a large sample for statistical analysis.
• Combines observations from multiple major space-based and ground-based telescopes for a multi-wavelength view.
• Covers a 2 square degree field, a relatively large area for a deep survey.
• Observations span a significant period (2004-2006) and combine configurations for improved sensitivity and resolution.

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 specific telescopes and survey strategy.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Observations from the Very Large Array (VLA) telescope in A- and C-configurations.

Time Range

Observations performed between September 2004 and September 2005, with additional data from February/March 2006.

Freshness

Last updated 2026-03-13 17:19:19.396925; freshness should be verified.

Geography

Covers a 2 square degree equatorial field centered on the COSMOS field.