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Scale Lyman-series A by line / LyA_wavelength - #355

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shaneraphel:igm-lyman-line-scale
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shaneraphel:igm-lyman-line-scale

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@shaneraphel

@shaneraphel shaneraphel commented Sep 19, 2026

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Calura12 A for Lyβ…Ly5 is A_Lya / (f_Lya / f_n) — oscillator strength only. Lyman-series optical depth scales as λ_n f_n / (λ_α f_α), and each row already stores line.

A is now A_Lya * (line / LyA_wavelength) / (f_Lya / f_n) on those four rows. Kamble20 comments stay commented. Inoue14 tables are unchanged.

Fixes #333

Calura12 higher-order A was leftover f_n/f_Lya only. Optical depth
scales as lambda_n f_n / (lambda_alpha f_alpha), and leftover already
stores each line.
@shaneraphel shaneraphel changed the title Scale leftover Lyman-series A by leftover line / LyA_wavelength Scale Lyman-series A by line / LyA_wavelength Sep 20, 2026
@sbailey

sbailey commented Sep 21, 2026

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External from DESI contribution. Wait until after Nevis before reviewing.

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sbailey marked this pull request as draft September 21, 2026 17:01
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IGM transmission constants

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