ABSTRACT

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ABSTRACT: Using the 20-pixel camera SHARC, we have mapped the dust emission from a 60^' by 12^' region in the Galactic center - by far the largest 350 micron coverage to date. A comparable region has been obsererved at 800 micron by Lis & Carlstrom (1994); the SHARC map has better spatial resolution and sensitivity to extended emission, however. Dust emission within a few arcminutes of the Sgr D core is detected for the first time, showing an anticorrelation with the diffuse radio continuum emission. 350 micron sources are associated with both H₂O masers in Sgr D, but only 1-2 out of 5 OH masers (Mehringer et al. 1998). Faint emission at the same Galactic longitude as the Dust Ridge (Lis & Carlstrom 1994) but at opposite latitude is visible, as well as a compact source at the base of a thermal radio filament at negative Galactic latitude. The 350 micron /800 micron ratio for the Galactic center is discussed.