ATLAS: Spectroscopic Classes and Redshifts for 466 Radio Sources

The Australia Telescope Large Area Survey (ATLAS) covers 7 square degrees of sky around the Chandra Deep Field South and ELAIS-S1 fields. This catalog presents 466 new spectroscopic redshifts from an optical follow-up program, with classifications including 142 star-forming, 282 active galactic nuclei (AGN), 10 stellar, and 32 unclassified spectra. The table was created by NASA's HEASARC in March 2013 based on data from the reference paper.

Use Cases

• Classifying radio source populations based on spectroscopic optical classes
• Training models to correlate radio and mid-infrared diagnostics for AGN identification
• Guiding survey design for future radio sky surveys like EMU based on redshift distribution
• Analyzing the physical properties of radio sources using distance-dependent parameters calculated with a specific cosmological model

Strengths

• Contains 466 new spectroscopic redshifts for radio sources, a substantial sample for analysis
• Provides explicit classification counts: 142 star-forming, 282 AGN, 10 stellar, and 32 unclassified
• Data is intended as a pathfinder for a major future survey (EMU), suggesting curated relevance

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 ML

Provenance

Source

NASA HEASARC, based on Table 2 from the reference paper obtained from the MNRAS website

Collection Method

Optical spectroscopic follow-up of radio sources detected by the Australia Telescope Large Area Survey (ATLAS)

Time Range

null

Freshness

Last updated 2026-03 13 20:14:21.461155; freshness should be verified

Geography

Sky regions around the Chandra Deep Field South (CDF-S) and the European Large Area ISO Survey-South 1 (ELAIS-S1) fields