FRIICAT: Catalog of 123 Edge-Brightened FR II Radio Galaxies

123 Fanaroff and Riley class II radio galaxies (FR IIs) selected from combined NVSS, FIRST, and SDSS survey observations. The catalog, published by NASA, includes sources with redshift <=0.15 and radio luminosity at 1.4 GHz ranging from ~10^39.5 to 10^42.5 erg/s. It distinguishes between low- and high-excitation galaxies (LEGs and HEGs), which show significant differences in host galaxy and black hole properties.

Use Cases

• Classifying radio galaxy morphology (FR I vs. FR II) based on edge-brightened radio structure.
• Analyzing the relationship between radio luminosity and host galaxy optical properties for low-power jets.
• Comparing properties of low-excitation galaxies (LEGs) and high-excitation galaxies (HEGs) within the FR II class.
• Cross-matching radio source catalogs with optical spectroscopic data from surveys like SDSS.

Strengths

• Contains 123 specifically selected FR II radio galaxies with defined redshift and morphology criteria.
• Provides radio luminosity range (10^39.5 - 10^42.5 erg/s) and black hole mass estimates for LEGs (10^8 - 10^9 solar masses).
• Distinguishes between two galaxy classes (90% LEGs, 10% HEGs) with noted property differences.

Limitations

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

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Selected from a published sample combining NVSS, FIRST, and SDSS survey data, cross-matched with optical spectroscopic catalogs from SDSS DR7.

Time Range

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Freshness

Last updated 2026-03-13 20:09:04.052515; freshness should be verified.

Geography

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