Other
Scientific paper
Dec 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999sf99.proc..159m&link_type=abstract
Star Formation 1999, Proceedings of Star Formation 1999, held in Nagoya, Japan, June 21 - 25, 1999, Editor: T. Nakamoto, Nobeyam
Other
Scientific paper
We carry out radiation hydrodynamic calculations to reveal physical processes in the formation of a 1 Modot protostar. While the typical features in the evolution are in good agreement with previous studies, we find that the behavior of the luminosity curve depends on the initial density structure. Our numerical code is designed to provide the evolution of the SED along with the dynamical evolution in our spherically symmetric calculations. We confirm that the SED evolves from a 10K greybody spectrum to hotter spectra typical for class I and flat spectrum sources. Comparing the luminosity curve and the SED in our model with observational trends, we show that an initially non-hydrostatic cloud core shows evolutionary features consistent with observations, while an initially hydrostatic core does not. Compiling our results and other theoretical and observational evidence, we illustrate an evolutionary picture of protostar formation. In terms of the evolutionary time and the inclination to an observer, we find that protostellar objects are clearly categorized.
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