S-COSMOS IRAC 4-channel Photometry Catalog: Infrared Galaxy Flux Data

A photometry catalog for over 2 million galaxies detected in the COSMOS astronomical survey, spanning 75% of the age of the universe. It includes flux measurements in four infrared channels from the Spitzer Space Telescope's IRAC instrument for sources with a measured flux above 1 microjansky in Channel 1. The data was produced by the National Aeronautics and Space Administration and was last updated in March 2026.

Use Cases

• Model galaxy spectral energy distributions based on four-band infrared photometry.
• Study galaxy evolution as a function of redshift using a large sample spanning cosmic time.
• Analyze the relationship between galaxy properties and large-scale structural environment.
• Train machine learning models for galaxy classification or redshift estimation using infrared flux features.

Strengths

• Covers over 2 million galaxies, providing a large statistical sample.
• Spans 75% of the age of the universe, offering broad temporal coverage.
• Integrates data from multiple major space-based and ground-based telescopes mentioned in the survey.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and file size are unknown, which may limit suitability assessment.
• Data may reflect observational biases inherent to the specific telescopes and survey strategy.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Photometric measurements from the Spitzer Space Telescope's IRAC instrument as part of the COSMOS survey.

Time Range

Spans 75% of the age of the universe.

Freshness

Last updated 2026-03-13 16:39:19.397172; freshness should be verified.

Geography

Covers a 2 square degree equatorial field.