AT-HDFS: Combined Radio Source Catalog for Hubble Deep Field-South

Deep radio observations of the Hubble Deep Field-South region were performed by the Australia Telescope Compact Array from 1998 to 2001. The catalog, created by NASA HEASARC in 2012, contains 473 individual sources with flux densities and spectral indices at four frequencies (1.4, 2.5, 5.2, and 8.7 GHz). It consolidates data from multiple published papers to provide a sensitive multi-frequency view of the region.

Use Cases

• Analyze radio source spectral indices based on multi-frequency flux density measurements.
• Cross-match radio sources with optical counterparts in the Hubble Deep Field-South.
• Study the population and properties of faint radio sources in a deep field region.
• Investigate source variability or completeness across different observation frequencies.

Strengths

• Contains 473 individual radio sources, consolidating detections from four frequencies.
• Achieves a central sensitivity of ~10 microJy, representing one of the most sensitive ATCA observation sets.
• Observations span four years (1998-2001), providing temporal stability for the catalog.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for large-scale statistical analysis.

Provenance

Source

National Aeronautics and Space Administration (NASA HEASARC)

Collection Method

Observations gathered by the Australia Telescope Compact Array (ATCA) radio interferometer.

Time Range

1998 to 2001

Freshness

Last updated 2026-03-13 18:59:12.437421; freshness should be verified.

Geography

Centered on the Hubble Deep Field-South (HDF-S) region in celestial coordinates.