HI and the Interstellar Medium in the Large Magellanic Cloud

Details HI and the Interstellar Medium in the Large Magellanic Cloud HI and the Interstellar Medium in the Large Magellanic Cloud

Nov 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...198.9604k&link_type=abstract

American Astronomical Society, 198th AAS Meeting, #96.04; Bulletin of the American Astronomical Society, Vol. 33, p.1183

Astronomy and Astrophysics

Astronomy

Scientific paper

We present results from the combined Australia Telescope Compact Array (ATCA) aperture synthesis mosaic survey of HI emission in the Large Magellanic Cloud (LMC) with 64m Parkes single dish telescope observations. One of the striking features of HI synthesis map is the clumpiness of the HI distribution over the whole of the LMC. The position of clumps can be matched with 60 and 100 micron IRAS maps, Hα image and CO emission maps. By comparing the HI image with IRAS 100 micron map, we have derived the 100 micron emissivity, I100/NHI. The structures brighter at 100 micron emission have larger HI column densities. Its overall I100/NHI ratio is low as ~ 0.18 MJy sr-1/1020cm-2 due to low dust-to-gas ratio in the LMC. The 100 micron emissivity of the medium associated with HII regions is higher (up to 3.1) than that of the medium without HII regions.

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