Studying the Nature of Emission from PAHs/VSGs in Radiative Transfer Codes

Details Studying the Nature of Emission from PAHs/VSGs in Radiative Transfer Codes Studying the Nature of Emission from PAHs/VSGs in Radiative Transfer Codes

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21541411w&link_type=abstract

American Astronomical Society, AAS Meeting #215, #414.11; Bulletin of the American Astronomical Society, Vol. 42, p.255

Astronomy and Astrophysics

Astronomy

Scientific paper

We present three-dimensional radiative transfer models of natal super star clusters which treat both thermal reprocessing from dust and non-thermal emission from polycyclic aromatic hydrocarbons and very small grains (PAHs/VSGs). We find that including emission from PAHs/VSGs significantly changes the mid-infrared (MIR; 3-10 um) fluxes in the output spectral energy distribution (SED) compared to the omission of PAHs/VSGs, which is reflected in MIR color-color diagrams. Very little change in the near-IR or far-IR is detected. Furthermore, we show that the strength of the various PAH emission features in particular is related to: (1) the hardness of the radiation field, and (2) the fraction of dust which is distributed in clumps rather than smoothly.

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