SHELA: Combined Epoch Infrared Catalog for 24 Square Degrees

A combined epoch infrared catalog from the Spitzer/HETDEX Exploratory Large-Area (SHELA) survey covering approximately 24 square degrees at 3.6 and 4.5 microns. The survey area overlaps with the Sloan Digital Sky Survey 'Stripe 82', HETDEX, and Dark Energy Survey footprints. The catalog is 80% complete to a limiting magnitude of 22.0 AB mag and reaches a sensitivity of 1.1 microJy.

Use Cases

• Cross-match galaxies across multiple surveys based on the overlapping footprint with SDSS, HETDEX, and DES.
• Study galaxy properties and evolution using the 3.6 and 4.5 micron infrared photometry.
• Perform statistical analyses of galaxy populations based on the survey's 80% completeness to 22.0 AB mag.
• Conduct photometric measurements and sensitivity analyses using the 1.1 microJy limiting flux.

Strengths

• Covers a large area of approximately 24 square degrees.
• Provides 80% completeness to a specific limiting magnitude of 22.0 AB mag.
• Reaches a defined sensitivity limit of 1.1 microJy at both 3.6 and 4.5 microns.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data is stored in a BIN format, which may require specialized tools for access.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Infrared imaging from the Spitzer Space Telescope as part of the SHELA survey.

Time Range

The description suggests this is a combined epoch catalog, but specific observation dates are not provided.

Freshness

Last updated 2026-03-13 19:53:01.857526; freshness should be verified.

Geography

Covers a sky area within the Sloan Digital Sky Survey 'Stripe 82' region.