The Relationship Between PAH Emission and Gas Tracers in the Large Magellanic Cloud

Type Conference Paper
Names Tony H. Wong, R. Xue, B. Whitney, F. Heitsch, A. Hughes, A. D. Bolatto, T. Robitaille
Proceedings Title Bulletin of the American Astronomical Society
Conference Name AAS Meeting #222, #216.03
Volume 222
Date June 1, 2013
Library Catalog
Abstract The Spitzer SAGE 8-micron image of the LMC is strongly dominated by interstellar emission from PAH molecules, and offers spatial and brightness dynamic range which far exceeds what is available from spectral-line radio observations. We examine the correlation of this emission with other gas tracers, including the radio lines of CO, HI, and HCO+ as observed by the ATCA and Mopra telescopes, and archival UV absorption spectra of HI and H2 from the HST and FUSE. We show preliminary results of radiative transfer simulations using the HYPERION code aimed at identifying regimes and techniques for using 8-micron emission as a high resolution (sub-pc) tracer of gas density.
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