The Structure of GRSMC 45.46+0.05

Details The Structure of GRSMC 45.46+0.05 The Structure of GRSMC 45.46+0.05

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aspc..317...91j&link_type=abstract

Milky Way Surveys: The Structure and Evolution of our Galaxy, Proceedings of ASP Conference #317. The 5th Boston University Ast

Astronomy and Astrophysics

Astrophysics

Scientific paper

We present a 13CO(1-0) image of the star-forming cloud 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 addition of the interferometer data provides a synthesized beam with a spatial resolution of 15'' by 20'', a factor of 2.4 smaller than the FCRAO alone. For GRSMC 45.46+0.05, at D=6 kpc, this corresponds to 0.5 pc. The improved spatial resolution enables us to investigate cloud structure over a larger clump mass range than previously possible. 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) and find no change in the slope of the mass profile. We find a spectral index α = 1.73±0.07 from our FCRAO observations, and α = 1.76±0.12 from the combined BIMA and FCRAO data.

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