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arXiv · 0711.2154

Hot Cores in the submm - obscured by dust?

Rainer Rolffs·Peter Schilke·Claudia Comito·Carolin Hieret·Friedrich Wyrowski
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Abstract

We present APEX observations of HCN (9-8) and (4-3) lines toward a sample of hot cores. The spectral shapes of the main transitions are asymmetric and self-absorbed, as expected for high optical depth in a possibly infalling envelope. For spherical symmetry, the large column densities of these sources would mean that the central region is obscured by dust above a certain frequency. However, we detected the vibrationally excited satellite lines (v_2=1; J=9-8) at 797 GHz, which originate from the inner regions. This indicates that high-frequency ALMA observations of hot core centers will be feasible.

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Rainer Rolffs, Peter Schilke, Claudia Comito, Carolin Hieret, Friedrich Wyrowski. 2007-11-14. Hot Cores in the submm - obscured by dust?. https://arxiv.org/abs/0711.2154

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