The Emitted Spectrum of a Proto-Star

Abstract
The spectral energy distribution emitted by a collapsing proto-star has been calculated on the basis of some simple approximations for the radiative transfer in the extended spherical ‘ atmosphere ’ of the proto-star. Results for the evolution in spectral appearance are presented for several of the collapsing proto-star calculations described in a previous paper (Larson 1969). Comparison is made with some observations of infra-red objects in Orion and with recent infra-red observations of T Tauri stars.

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