SDWFS: Spitzer Infrared Survey of the Boötes Field Across Four Epochs

Four-epoch infrared survey of 10 square degrees in the Boötes field, permitting the selection of variable and high proper motion objects over a wide field. The Spitzer Cycle 4 Legacy project data is sensitive to galaxies out to z ~ 3 with reduced cosmic variance impact. Catalogs from the National Aeronautics and Space Administration report Vega magnitudes for four IRAC bands with multiple aperture measurements.

Use Cases

• Select infrared-variable objects based on multi-epoch observations over years.
• Identify high proper motion objects based on positional changes across four epochs.
• Characterize galaxy evolution beyond z ~ 1.5 based on the survey's large volume and sensitivity.
• Analyze photometric properties using Vega magnitudes reported for 3.6, 4.5, 5.8, and 8 micron bands.

Strengths

• Covers 10 square degrees in the Boötes field, a wide area for infrared survey.
• Consists of four epochs, enabling time-domain analysis over years.
• Source coordinates correspond to 2MASS catalog positions within 0.2 arcsec.
• Provides 20 catalogs across four epochs and a total coadd, with three measurement apertures per source.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Survey using the IRAC instrument on the Spitzer Space Telescope as part of the Spitzer Cycle 4 Legacy project.

Time Range

Coverage spans four epochs, likely over several years.

Freshness

Last updated 2026-03-13 19:19:47.186917; freshness should be verified.

Geography

Observations of the Boötes field.