SERVS: Spitzer Extragalactic Infrared Survey Catalog for CDFS

A deep infrared catalog from the Spitzer Extragalactic Representative Volume Survey (SERVS) for the CDFS field. The data contains objects observed at 4.5 microns with a signal-to-noise ratio cut of CSNR > 5 and a reliability flag of REL=1. It was produced by NASA's Spitzer Exploration Science program and last updated in March 2026.

Use Cases

• Statistical analysis of extragalactic object populations based on deep 4.5 micron observations.
• Cross-matching with reliable near-infrared or other wavelength catalogs to maximize counterpart identification.
• Studying the properties of faint infrared sources in the CDFS field using single-band, high-reliability data.

Strengths

• Data is deeper than the 2-band high reliability catalogs, offering more sensitive detections.
• Includes a reliability flag (REL=1) and a signal-to-noise cut (CSNR > 5) for quality control.
• Observations were conducted by the Spitzer Space Telescope, a major NASA mission.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Objects are from a single infrared band (4.5 microns) and lack required counterparts in other bands.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Observations from the Spitzer Space Telescope's IRAC instrument at 4.5 microns.

Freshness

Last updated 2026-03-13 19:37:18.592793; freshness should be verified.

Geography

CDFS (Chandra Deep Field-South) extragalactic field.