AAS 201st Meeting, January, 2003
Session 112. The ISM: Clouds and Regions
Poster, Thursday, January 9, 2003, 9:20am-4:00pm, Exhibit Hall AB

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[112.19] The Structure of GRSMC045.46+0.05

A. Johnson, J.M. Jackson, R.Y. Shah, R. Simon (Institute for Astrophysical Research, Boston University), A. Bolatto (University of California, Berkeley), J. Di Francesco (Herzberg Institute of Astrophysics, National Research Council)

We present a 13CO J=1-0 image of GRSMC 45.46+0.05 using observations taken with the BIMA D-array and corrected for zero-spacing flux with BU-FCRAO Milky Way Galactic Ring Survey data. The combined data provide a spatial resolution of 18.8 arcseconds, a factor 2.4 smaller than FCRAO. For GRSMC 45.46+0.05, which is at a kinematically determined distance of 6 kpc, this resolution corresponds to 0.5 pc. The improved spatial resolution enables us to investigate cloud structure over a larger range of clump masses. We derive a clump mass spectrum using the three dimensional gaussian decomposition algorithm GAUSSCLUMPS (Stutzki & Güsten 1990). We compare the higher resolution spectrum to a lower resolution spectrum of the surrounding region (Simon et al. 2001). The Galactic Ring Survey acknowledges support by the NSF via grants AST-9800334 and AST-0098562.

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