Protostars and Planets VI, Heidelberg, July 15-20, 2013

Poster 1S013

The Dynamic Role of Large-Scale Gas Flows in High-Mass Star-Forming Filaments

Battersby, Cara (University of Colorado, Boulder)
Bally, John (University of Colorado, Boulder)
Ginsburg, Adam (University of Colorado, Boulder)
Longmore, Steve (Liverpool John Moores University)
Dunham, Miranda (Yale University)
Shirley, Yancy (University of Arizona)
Myers, Philip (Harvard CfA)
Kirk, Helen (McMaster University)

We investigate the large-scale gas flows in a Massive Molecular Filament (MMF: M(H2) > 10^4 Msun, l > 10 pc, and delta-v < 5 km/s) aligned with the Galactic Plane and forming high-mass stars. We find a coherent velocity structure along the length of the 80 pc filament and hypothesize that it was formed at the intersection of star-forming bubbles. Along the line-of-sight, the filament shows strong radial infall signatures, particularly toward the dark, quiescent regions. Finally, we compare the physical properties of two high-mass star-forming clumps within the filament at different evolutionary stages, from quiescent, cold, mid-IR-dark, to warm and active with an embedded UCHII region.

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