ATHDF-S: Optical Identifications for Radio Sources in the Hubble Deep Field-South

66% of radio sources in the Australia Telescope Hubble Deep Field-South survey have optical counterparts to an I magnitude of 23.5 mags. The catalog presents optical identifications, including new spectroscopic observations for 98 sources and photometric redshifts from five-band imaging. It was created by the HEASARC in December 2012 based on published data from the Australia Telescope Compact Array and supporting optical telescopes.

Use Cases

• Cross-matching radio and optical sources based on the provided identifications and coordinates.
• Analyzing galaxy properties using the spectroscopic and photometric redshift data.
• Studying source populations in one of the deepest radio surveys performed with the Australia Telescope Compact Array.

Strengths

• Integrates data from multiple deep surveys, including radio (ATCA) and optical (HST, CTIO, AAT).
• Includes both spectroscopic and photometric redshift estimates for sources.
• Sensitivities reach ~10 microJansky at multiple radio frequencies (1.4, 2.5, 5.2, 8.7 GHz).

Limitations

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

Provenance

Source

NASA HEASARC, based on CDS Catalog J/AJ/135/2470.

Collection Method

Observational data from the Australia Telescope Compact Array, Hubble Space Telescope, Cerro Tololo Inter-American Observatory, and Anglo-Australian Telescope.

Freshness

Last updated 2026-03-13 16:42:04.699844; freshness should be verified.

Geography

Hubble Deep Field-South region.