Radiative Transfer in Prestellar Cores: A Monte Carlo Approach

Details Radiative Transfer in Prestellar Cores: A Monte Carlo Approach Radiative Transfer in Prestellar Cores: A Monte Carlo Approach

2003-06-05

arxiv.org/abs/astro-ph/0306114v1

Astronomy and Astrophysics

Astrophysics

8 pages, 15 figures, to appear in the conference proceedings of "Open Issues in Local Star Formation and Early Stellar Evoluti

Scientific paper

We use our Monte Carlo radiative transfer code to study non-embedded prestellar cores and cores that are embedded at the centre of a molecular cloud. Our study indicates that the temperature inside embedded cores is lower than in isolated non-embedded cores, and generally less than 12 K, even when the cores are surrounded by an ambient cloud of small visual extinction (Av~5). Our study shows that the best wavelength region to observe embedded cores is between 400 and 500 microns, where the core is quite distinct from the background. We also predict that very sensitive observations (~1-3 MJy/sr) at 170-200 microns can be used to estimate how deeply a core is embedded in its parent molecular cloud. Finally, we present preliminary results of asymmetric models of non-embedded cores.

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