ACT 2008 Southern Survey: 191 Extragalactic Sources at 148/218 GHz

191 extragalactic sources detected by the Atacama Cosmology Telescope at 148 and/or 218 GHz in the 2008 Southern survey. Flux densities span 14 to 1700 mJy, with the catalog dividing sources into 167 radio galaxies and 24 dusty star-forming galaxies. The table was created by NASA's HEASARC in May 2015 based on a CDS catalog.

Use Cases

• Classifying extragalactic source populations based on spectral indices derived from ACT-only data
• Analyzing spectral energy distribution trends from 20 to 218 GHz for synchrotron-dominated sources
• Studying the properties of high-redshift dusty star-forming galaxies, including those potentially lensed
• Cross-matching and validating source catalogs in millimeter-wave astronomy

Strengths

• Catalog contains 191 sources with high signal-to-noise (S/N > 5) detections
• 97% of sources (166 AGN and 19 DSFGs) are cross-identified with existing catalogs
• Observations from a high-altitude (5190m) site with access to both celestial hemispheres

Limitations

• Column-level documentation is absent; field semantics must be inferred after download
• Row count is known (191), but specific column definitions and sample data are unavailable

Provenance

Source

National Aeronautics and Space Administration (NASA HEASARC)

Collection Method

Observations from the Atacama Cosmology Telescope (ACT) at 148 GHz and 218 GHz, with source lists combined from independent detections at each frequency.

Time Range

2008 survey

Freshness

Last updated 2026-03-13 20:14:37.388287; freshness should be verified

Geography

Southern celestial hemisphere, observed from Cerro Toco in the Atacama Desert, Chile