Mapping the Structure of Dark Filaments in OMC 3 with the IRS

Details Mapping the Structure of Dark Filaments in OMC 3 with the IRS Mapping the Structure of Dark Filaments in OMC 3 with the IRS

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005sptz.prop20797m&link_type=abstract

Spitzer Proposal ID #20797

Physics

Scientific paper

We propose a novel method for molecular clouds by measuring the attenuation of an extended mid-IR nebula by a cold foreground cloud. Such nebula have a characteristic spectrum with bright spectral features thought to arise from polycyclic aromatic hydrocarbons. By measuring the variable attenuation of these features by the cold dust cloud, and particular, the silicate absorption feature, we can measure the column density through the filament. We will map dark filaments in the Orion Molecular Cloud 3 regions, and use these to understand the structure of the filaments and how they fragment into stars.

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