SDWFS: Spitzer Deep Wide-Field Survey 8 Micron Infrared Catalogs

A four-epoch infrared survey of 10 square degrees in the Boötes field, conducted using the IRAC instrument on the Spitzer Space Telescope. The National Aeronautics and Space Administration project delivers 20 band-matched catalogs with Vega magnitudes at 3.6, 4.5, 5.8, and 8 microns, permitting the selection of variable and high proper motion objects. The large survey volume is sensitive to galaxies out to z ~ 3 with reduced cosmic variance.

Use Cases

• Identify infrared-variable objects based on four epochs of observation over years.
• Select high proper motion objects over a wide field using multi-epoch data.
• Characterize galaxy evolution at high redshift (z ~ 3) based on the survey's large volume and sensitivity.
• Perform photometric analysis using Vega magnitudes reported in four IRAC bands.
• Cross-match sources with other surveys using coordinates aligned to 2MASS within 0.2 arcsec.

Strengths

• Covers a wide 10-square-degree field in the Boötes region.
• Provides data from four distinct epochs, enabling time-domain analysis.
• Reports photometry in four infrared bands (3.6, 4.5, 5.8, 8 microns) with three measurement apertures per source.
• Source coordinates are matched to 2MASS positions within 0.2 arcsec.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Tabulated uncertainties are estimated as twice the SExtractor statistical uncertainties, which may not fully characterize systematics.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Observations from the IRAC instrument on the Spitzer Space Telescope, processed into band-matched catalogs.

Freshness

Last updated 2026-03-13 16:41:30.431616; freshness should be verified.

Geography

Boötes field of the NOAO Deep Wide-Field Survey.