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

Graves, S. F.; Richer, J. S.; Buckle, J. V.; Duarte-Cabral, A.; Fuller, G. A.; Hogerheijde, M. R.; Owen, J. E.; Brunt, C.; Butner, H. M.; Cavanagh, B.; Chrysostomou, A.; Curtis, E. I.; Davis, C. J.; Etxaluze, M.; Francesco, J. Di; Friberg, P.; Friesen, R. K.; Greaves, J. S.; Hatchell, J.; Johnstone, D.; Matthews, B.; Matthews, H.; Matzner, C. D.; Nutter, D.; Rawlings, J. M. C.; Roberts, J. F.; Sadavoy, S.; Simpson, R. J.; Tothill, N. F. H.; Tsamis, Y. G.; Viti, S.; Ward-Thompson, D.; White, G. J.; Wouterloot, J. G. A. and Yates, J. (2010). The JCMT Legacy Survey of the Gould Belt: a first look at Serpens with HARP. Monthly Notices of the Royal Astronomical Society, 409(4) pp. 1412–1428.

DOI: https://doi.org/10.1111/j.1365-2966.2010.17140.x

Abstract

The Gould Belt Legacy Survey on the James Clerk Maxwell Telescope's has observed a region of 260 arcmin² in ¹²CO J= 3 → 2 emission, and a 190 arcmin² 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 M_ʘ, and to be gravitationally bound, and that the kinetic energy of the outflowing gas is approximately 70 per cent 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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