source boundary
frontier-owneddeclared
A source record is provenance. It supports a finding only through evidence atoms, extraction spans, and reviewed finding bundles.
frontiers / frontier
Source record
back to sourcessource boundary
frontier-ownedA source record is provenance. It supports a finding only through evidence atoms, extraction spans, and reviewed finding bundles.
finding bindings
record contextFindings bound to this source through source ids, evidence atoms, provenance, or reviewed source-record slots.
evidence atoms
materializedEvidence atoms pin exact spans, measurements, selectors, or curation assertions to the source.
review context
inspectable1 reviewable changes and 0 evaluations are attached through this source or its findings.
Locator and citation
locator
title:Spatially-resolved stellar population studies (M31, M33, similar galaxies)
imported
2026-05-29T02:16:30.227671+00:00
extraction mode
manual_curation
authors
reviewer:will-blair
Caveats
No source-specific caveats are recorded.
The anomalous metallicity-color-magnitude gradient observed in some nearby galaxies (e.g., age gradients in M31 disk) implies that spatially-resolved TRGB distance determination, rather than global mean distance, can vary by ±0.10 mag depending on which field is sampled, contributing ±3–5% uncertainty to galaxy distance.
events
vev_efc016d37872070dfinding.assertedManual finding added to frontier state
reviewer:will-blair · 2026-05-29
reviewable changes
vpr_f55185d63efd026dfinding.addManual finding added to frontier state
applied · reviewer:will-blair · 2026-05-29
evaluations
No evaluation rows are attached.