Infra-red observations of young stars - IV. Radiative mechanisms and interpretations.
Recently published multifilter infra-red observations of various categories of young stars are discussed. These data are used to suggest a possible mechanism for the infra-red emission, to derive bolometric magnitudes for young stars, and, by assuming that all these stars are on their radiative tracks in the lIR diagram, to present a model of early stellar evolution. In this model the infall of material from a circumstellar shell surrounding the protostar, and mass loss from the central core, are the principal processes in terms of which the observations are interpreted.
Monthly Notices of the Royal Astronomical Society
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