Near-UV Bright Early-M Dwarf Catalog from GALEX and LG11 Cross-Correlation

A catalog of 4,805 early M-type dwarf stars cross-matched with Galaxy Evolution Explorer (GALEX) near-ultraviolet sources. The table lists 797 stars with NUV emission significantly above a basal level, after accounting for an estimated 16% false positives from background sources or companions. NASA HEASARC created this table in March 2015 based on research published in the Astronomical Journal.

Use Cases

• Modeling the evolution of near-ultraviolet luminosity for early M dwarfs based on the cross-correlated catalog.
• Estimating high-energy radiation exposure for planets in habitable zones based on identified NUV-active stars.
• Correcting for false positives in stellar activity catalogs based on the described multi-method inspection process.
• Testing star-formation rate and age-activity relation predictions against the constructed NUV luminosity function.

Strengths

• Cross-correlates two established catalogs (LG11 and GALEX) for validation.
• Identifies 797 candidate active stars from 4,805 initial matches.
• Accounts for false positives using spectral, imaging, photometry, and literature checks.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect observational bias inherent to the source catalogs and GALEX detection limits.

Provenance

Source

NASA HEASARC, based on Table 4 from referenced Astrophysical Journal paper.

Collection Method

Cross-correlation of the Lepine & Gaidos (2011) M dwarf catalog with GALEX NUV sources, followed by multi-instrument candidate inspection.

Time Range

Based on data from the GALEX mission and the 2011 LG11 catalog.

Freshness

Last updated 2026-03-13 20:03:57.886137; freshness should be verified.

Geography

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