Small Magellanic Cloud Radio Source Catalog at 4800 MHz

601 radio-continuum sources detected at 4800 MHz (6 cm) in the Small Magellanic Cloud. The catalog was created by the NASA HEASARC in September 2014 based on combined Australia Telescope Compact Array (ATCA) projects, with a sensitivity of 0.7 mJy/beam and a resolution of 30 arcseconds. Sources were identified using the MIRIAD task 'imsad' and visually confirmed as genuine point sources.

Use Cases

• Cross-matching radio sources with optical or infrared catalogs based on the provided J2000.0 coordinates.
• Analyzing the distribution and density of radio sources in the Small Magellanic Cloud based on the catalog's 601 entries.
• Studying radio-continuum emission properties using the reported flux density and sensitivity thresholds (e.g., > 5 sigma, 3.5 mJy).
• Training models for automated radio source detection based on the described visual verification and Gaussian fitting methodology.

Strengths

• Contains 601 confirmed point sources, providing a substantial sample for analysis.
• High sensitivity of 0.7 mJy/beam and a resolution of 30 arcseconds, enabling detection of faint sources.
• Sources were visually examined to exclude artifacts like side lobes, suggesting a curated, reliable catalog.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last updated 2026-03-13 19:01:21.304950; freshness should be verified.

Provenance

Source

NASA HEASARC, based on CDS Catalog J_other/Ser/184.93/.

Collection Method

Combined data from various Australia Telescope Compact Array (ATCA) projects, processed with MIRIAD task 'imsad'.

Time Range

Observational data likely from projects prior to the 2011 reference (Crawford et al.). Catalog created September 2014.

Freshness

Last updated 2026-03-13 19:01:21.304950.

Geography

Covers the Small Magellanic Cloud field from 00h 26m to 01h 28m in RA (J2000.0) and from -70° 29' to -75° 29' in Dec (J2000.0).