source boundary
frontier-owneddeclared
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evidence atoms
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Locator and citation
locator
title:Multiple HB calibration studies; metallicity degeneracy in optical color-magnitude diagrams
imported
2026-05-29T02:16:30.124152+00:00
extraction mode
manual_curation
authors
reviewer:will-blair
Caveats
No source-specific caveats are recorded.
observational · vf_e739510dadf9b39a
The luminosity of the Horizontal Branch (HB) is measurably correlated with metallicity and age, making unambiguous HB distance determinations difficult; when calibrated against globular cluster parallaxes, HB distances show ~0.2 mag scatter relative to TRGB, limiting standalone utility.
events
vev_760ddd8824498f4dfinding.assertedManual finding added to frontier state
reviewer:will-blair · 2026-05-29
reviewable changes
vpr_36696d149840d6dafinding.addManual finding added to frontier state
applied · reviewer:will-blair · 2026-05-29
evaluations
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