The JCMT Legacy Survey of the Gould Belt: a first look at Serpens with HARP

Details The JCMT Legacy Survey of the Gould Belt: a first look at Serpens with HARP The JCMT Legacy Survey of the Gould Belt: a first look at Serpens with HARP

2010-06-04

arxiv.org/abs/1006.0891v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

17 Pages, accepted by MNRAS

Scientific paper

The Gould Belt Legacy Survey (GBS) on the JCMT has observed a region of 260 square arcminutes in 12CO J=3--2 emission, and a 190 square arcminute subset of this in 13CO and C18O towards the Serpens molecular cloud. We examine the global velocity structure of the non-outflowing gas, and calculate excitation temperatures and opacities. The large scale mass and energetics of the region are evaluated, with special consideration for high velocity gas. We find the cloud to have a mass of 203 solar masses, and to be gravitationally bound, and that the kinetic energy of the outflowing gas is approximately seventy percent of the turbulent kinetic energy of the cloud. We identify compact outflows towards some of the submillimetre Class 0/I sources in the region

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