Supersonic turbulence in the cold massive core jcmt 18354���0649s���
Carolan, P. B. Khanzadyan, T. Redman, M. P. Thompson, M. A. Jones, P. A. Cunningham, M. R. Loughnane, R. M. Bains, I. Keto, E.
Carolan, P. B.
Khanzadyan, T.
Redman, M. P.
Thompson, M. A.
Jones, P. A.
Cunningham, M. R.
Loughnane, R. M.
Bains, I.
Keto, E.
Repository DOI
Publication Date
2009-11-21
Keywords
radiative transfer, stars: formation, ism: individual: jcmt 18354-0649s, ism: jets and outflows, ism: kinematics and dynamics, ism: abundances, star-formation regions, young stellar objects, infrared dark clouds, initial conditions, molecular gas, brown dwarf, radiative-transfer, freeze-out, outflow, emission
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Article
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Citation
Carolan, P. B. Khanzadyan, T.; Redman, M. P.; Thompson, M. A.; Jones, P. A.; Cunningham, M. R.; Loughnane, R. M.; Bains, I.; Keto, E. (2009). Supersonic turbulence in the cold massive core jcmt 18354���0649s���. Monthly Notices of the Royal Astronomical Society 400 (1), 78-89
Abstract
An example of a cold massive core, JCMT 18354-0649S which is a possible high-mass analogue to a low-mass star-forming core, is studied. Line and continuum observations from James Clerk Maxwell Telescope, Mopra Telescope and Spitzer are presented and modelled in detail using a 3D molecular line radiative transfer code. In almost every way, JCMT 18354-0649S is a scaled-up version of a typical low-mass core with similar temperatures, chemical abundances and densities. The difference is that both the infall velocity and the turbulent width of the line profiles are an order of magnitude larger. While the higher infall velocity is expected due to the large mass of JCMT 18354-0649S, we suggest that the dissipation of this highly supersonic turbulence may lead to the creation of dense clumps of gas that surround the high-mass core.
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Publisher
Oxford University Press (OUP)
Publisher DOI
10.1111/j.1365-2966.2009.15441.x
Rights
Attribution-NonCommercial-NoDerivs 3.0 Ireland