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The emergent intensity from a star's atmosphere is I1. Before the light from the star reaches the observer, it passes through a dust shell with optical depth T < 1 and source function S which is independent of T. Beginning with the equation of radiative transfer IS, show that the observed intensity is, dI dT = 10 ≈ I₁ (1 − T) + ST. -

The emergent intensity from a star's atmosphere is I1. Before the light from the star reaches the observer, it passes through a dust shell with optical depth T < 1 and source function S which is independent of T. Beginning with the equation of radiative transfer IS, show that the observed intensity is, dI dT = 10 ≈ I₁ (1 − T) + ST. -

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The emergent intensity from a star's atmosphere is I1. Before the light from the star reaches the observer, it passes through a dust shell with optical depth T < 1 and source function S which is independent of T. Beginning with the equation of radiative transfer IS, show that the observed intensity is, dI dT = 10 ≈ I₁ (1 − T) + ST. -
Transcribed Image Text:The emergent intensity from a star's atmosphere is I1. Before the light from the star reaches the observer, it passes through a dust shell with optical depth T < 1 and source function S which is independent of T. Beginning with the equation of radiative transfer IS, show that the observed intensity is, dI dT = 10 ≈ I₁ (1 − T) + ST. -
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