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Description
Over 2 million galaxies are detected in the COSMOS survey, spanning 75% of the age of the universe. The catalog includes concentration, asymmetry, gini, and M20 measurements within the Petrosian radius to classify galaxies as early-types, disks, and irregulars. This dataset is provided by the National Aeronautics and Space Administration and was last updated in March 2026.
Use Cases
Classify galaxies as early-types, disks, or irregulars based on morphological parameters.
Study the relationship between galaxy morphology and cosmic time (redshift).
Analyze galaxy evolution as a function of large-scale structural environment.
Train machine learning models for automated galaxy morphology classification using concentration, asymmetry, gini, and M20 features.
Strengths
Over 2 million galaxies detected, providing a large sample size.
Covers a 2 square degree equatorial field with imaging from major space and ground-based telescopes.
Morphological parameters are combined to provide discrete galaxy type classifications.
Limitations
Column-level documentation is absent; field semantics must be inferred after download.
Row count is unknown, which may limit suitability assessment.
File formats are BIN and HTML, which may require specialized tools for access and analysis.
Provenance
Source
National Aeronautics and Space Administration
Collection Method
Astronomical survey imaging from Hubble, Spitzer, GALEX, XMM, Chandra, Subaru, VLA, ESO-VLT, UKIRT, NOAO, CFHT, and other telescopes.
Time Range
Spans 75% of the age of the universe.
Freshness
Last updated 2026-03-13 19:01:47.551866; freshness should be verified.
Geography
Covers a 2 square degree equatorial field.
License is listed as 'other-license-specified'; specific terms must be reviewed before use.