COSMOS Tasca Morphology Catalog: Galaxy Shapes from a 2-Square-Degree Survey

The COSMOS Tasca Morphology Catalog contains morphological parameters for over 2 million galaxies. Parameters were computed using Morpheus 2005, with types estimated in three different ways as detailed by Tasca et al. (2009). The data originates from the NASA COSMOS survey, which probes galaxy evolution across 75% of the universe's age.

Use Cases

• Classify galaxy morphological types based on the computed parameters.
• Study the correlation between galaxy morphology and cosmic time (redshift).
• Analyze galaxy evolution as a function of large-scale structural environment.
• Train or validate machine learning models for automated galaxy morphology classification.

Strengths

• Over 2 million galaxies detected, providing a large sample size.
• Data spans 75% of the age of the universe, offering broad temporal coverage.
• Imaging combines data from major space-based and ground-based telescopes.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Morphological parameters computed using Morpheus 2005 from imaging data.

Time Range

Spans 75% of the age of the universe.

Freshness

Last updated 2026-03-13 18:22:50.188450; freshness should be verified

Geography

Covers a 2 square degree equatorial field.