Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.1418b&link_type=abstract
American Astronomical Society, AAS Meeting #211, #14.18; Bulletin of the American Astronomical Society, Vol. 39, p.762
Astronomy and Astrophysics
Astronomy
Scientific paper
Using HI from the new GASS survey of the southern sky, and reprocessed IRAS 100-micron data (IRIS) we have studied the FIR emissivity of three selected regions of the Magellanic Stream (MS), chosen so that the Stream is kinematically distinct from local gas and bright enough to contribute significantly to the total HI column density in those directions. We divided the HI spectra into local and MS components, and compared these to the FIR emission across each field, where the FIR data were convolved to the same angular resolution as the HI. Within each field, a constant emissivity was assumed for each component. The results for the local gas are consistent from one field to the next, and comparable to previous determinations (e.g. Boulanger and Perault 1988). However, no trace of FIR emission was found from the Magellanic Stream. We will present the quantitative results and their implications for questions of abundances and dust heating in the MS. This research was supported by an NSF REU program grant to the NRAO.
Brunner Sophia
Janowieki S.
Lockman Felix J.
Pisano Daniel J.
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