Abstracts, Galactic Center Workshop '98
ABSTRACT

SHARC 350 micron Mapping of the Galactic Center from the Caltech Submillimeter Observatory

Dowell, C.D.; Lis, D.C.; Serabyn, E.; Phillips, T.G.

Dept. Physics, Caltech, Mail Code 320-47, Pasadena, CA 91125; cdd@submm.caltech.edu, dcl@tacos.caltech.edu, serabyn@tacos, phillips@tacos

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.

LINKS: Program, cdd@submm.caltech.edu