Answer to Question #87214 in Astronomy | Astrophysics for Javed Akhter

Question

Calculate the half-width of a spectral line of wavelength λ = 550 nm when the
temperature of the gas is 6 × 105
K. Assume H atoms to be emitters.

Answer 1

Spectral line intensity

I = N A hv e^(-E/kT)

FWHM = I/2