3C273 — IUE Lyman Alpha Spectral Analysis

Load Final Data.xlsx to begin

Load Final Data.xlsx first

Spectrum

Load Spectra Folder (.txt files) No .txt files loaded — full spectrum plots unavailable Folder must contain all IUE SWP .txt files

Continuum Windows (Å) Comma-separated lo:hi pairs (avoid emission line region)

Full Spectrum — Continuum Subtraction

Emission Line Fit

Residuals

Emission Line Results

File	Line	Centre (Å)	Flux	Flux Err	SNR	EW (Å)	EW Err	FWHM (Å)	FWHM km/s	Wing (Å)	Min λ	Max λ	χ²_ν

Identification

Spectrum—

Components—

Gaussian Fit (from Excel)

Line Measurements

Flux—

Flux Error—

SNR—

EW (Å)—

EW Err—

Continuum Fit

Spectral Index—

Amplitude—

F_cont(λ₀)—

Cont. pts—

Wing Window

Wing Window (Å)—

Wing λ_lo—

Wing λ_hi—

Min λ (Å)—

Max λ (Å)—

Reduced χ²—

Wing Wavelength Calculator

Rest λ (Å)

Rest FWHM (km/s)

Lyman-Alpha Emission Line — Time Series & Individual Spectra