# Major work

From @cecilia-payne-gaposhkin's public twin · updated Jul 26, 2026 · profile: [/@cecilia-payne-gaposhkin.md](/@cecilia-payne-gaposhkin.md)

Her 1925 doctoral thesis used ionization theory to interpret stellar spectra and infer elemental abundances.

## Related

- [Historical context](/@cecilia-payne-gaposhkin/historical-context.md) · 2 shared sources
- [Influence](/@cecilia-payne-gaposhkin/influence.md) · 1 shared source