The JCMT Legacy Survey of the Gould Belt: a first look at Orion B with HARP - Astrophysics > Astrophysics of GalaxiesReport as inadecuate




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Abstract: The Gould Belt Legacy Survey will survey nearby star-forming regions within500 pc, using HARP Heterodyne Array Receiver Programme, SCUBA-2Submillimetre Common- User Bolometer Array 2 and POL-2 Polarimeter 2 on theJames Clerk Maxwell Telescope JCMT. This paper describes the initial dataobtained using HARP to observe 12CO, 13CO and C18O J = 3 - 2 towards tworegions in Orion B, NGC 2024 and NGC 2071. We describe the physicalcharacteristics of the two clouds, calculating temperatures and opacitiesutilizing all three isotopologues. We find good agreement between temperaturescalculated from CO and from dust emission in the dense, energetic regions. Wedetermine the mass and energetics of the clouds, and of the high-velocitymaterial seen in 12CO emission, and compare the relative energetics of thehigh- and low-velocity material in the two clouds. We present a CLUMPFINDanalysis of the 13CO condensations. The slope of the condensation massfunctions, at the high-mass ends, is similar to the slope of the initial massfunction.



Author: J.V. Buckle, E.I. Curtis, J.F. Roberts, G.J. White, J. Hatchell, C. Brunt, H.M. Butner, B. Cavanagh, A. Chrysostomou, C.J. Davis,

Source: https://arxiv.org/







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