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Description
Nearly 4000 discrete compact radio sources detected in the Galactic plane by the Westerbork Synthesis Radio Telescope. The survey covers a section from +42 to +92 degrees Galactic Longitude, observed at two epochs to identify variable sources. The catalog, produced by the National Aeronautics and Space Administration, lists source positions, flux densities, and dimensions for objects with peak intensity >5 times the local noise level.
Use Cases
Identify variable radio sources based on the two-epoch observation strategy.
Study the distribution of compact galactic sources like radio stars and low surface brightness supernova remnants.
Analyze the spatial correlation of resolved sources with galactic spiral arms and disk warping.
Classify sources as resolved or unresolved based on Gaussian model parameters relative to the beam area.
Strengths
Catalog contains nearly 4000 discrete sources with sizes less than about 3 arcminutes.
Survey sensitivity is typically a few mJy, with detection levels as low as 10 mJy/beam.
Sources were identified based on visual inspection of the mosaicked images.
Approximately 15% of the sources are resolved, providing dimensional data.
Limitations
Column-level documentation is absent; field semantics must be inferred after download.
Row count is unknown, which may limit suitability assessment.
Provenance
Source
National Aeronautics and Space Administration
Collection Method
Observations from the Westerbork Synthesis Radio Telescope (WSRT) in the Netherlands, with data processed using the AIPS routine IMFIT.
Time Range
Observations were conducted at two epochs, several years apart.
Freshness
Last updated 2026-03-13 16:47:42.800162; freshness should be verified.
Geography
Galactic plane from +42 to +92 degrees Galactic Longitude, within |b| < 1.6 degrees Galactic Latitude.
License is listed as 'other-license-specified'; specific terms must be checked. File formats include BIN and HTML.