SERVS ELAIS-S1: High-Reliability Infrared Galaxy Catalog

Spitzer Extragalactic Representative Volume Survey (SERVS) provides deep infrared observations of five extragalactic fields. The ELAIS-S1 2-band catalog contains matched 3.6 and 4.5 micron sources with a stated reliability greater than 99.9%. This catalog was produced by NASA and was last updated on 2026-03-13.

Use Cases

• Selecting high-reliability galaxy samples based on the >99.9% reliability criterion
• Analyzing galaxy properties using matched 3.6 and 4.5 micron infrared fluxes
• Studying extragalactic fields like ELAIS-S1 based on the survey's deep observations
• Applying coverage-weighted signal-to-noise ratio (CSNR) thresholds for source detection

Strengths

• Catalog objects have a stated reliability greater than 99.9%
• Sources are detected in both 3.6 and 4.5 micron infrared bands
• Observations cover five named extragalactic fields
• Detection threshold uses a coverage-weighted signal-to-noise ratio (CSNR) > 10-sigma

Limitations

• Row count is unknown, which may limit suitability assessment
• Column-level documentation is absent; field semantics must be inferred after download
• Low coverage areas near the survey edges are omitted (POLY_12=1)

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Observations from the Spitzer Space Telescope IRAC instrument

Time Range

null

Freshness

Last updated 2026-03-13 16:31:59.626910; freshness should be verified

Geography

Extragalactic fields: ELAIS-N1, Lockman Hole, XMM, ELAIS-S1, and CDFS