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High resolution CO observations of S88-B

White, G. J. and Fridlund, C. V. M. (1992). High resolution CO observations of S88-B. Astronomy & Astrophysics, 266 pp. 452–456.

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Abstract

CO J = 2-1 and 13CO J = 2-1 and 1-0 observations have been made of the H II region S88-B, using the 15-m James Clerk Maxwell telescope in Hawaii and the 20-m telescope at Onsala. The core of the cloud is resolved into a horseshoelike structure which surrounds a diffuse reflection nebula. The central core has a mass of ≥ 1000 M, with 400 M in the horseshoe structure. The gas in the horse in the horseshoe appears highly fragmented, and has a kinetic temperature of ≈ 60 K, suggesting it is closely coupled to the dust temperature. A recently formed high mass star appears to be in the process of evacuating a cavity, possibly through a large molecular outflow that is found to show an accelerated component in its blue-shifted lobe. A velocity gradient across the horseshoe structure suggest ordered motion, and could represent rotation in the parental cloud.

Item Type: Journal Article
Copyright Holders: 1992 European Southern Observatory
ISSN: 1432-0746
Keywords: carbon monoxide; HII regions; massive stars; reflection nebulae; star formation; astronomical models; molecular clouds; molecular flow
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Item ID: 33332
Depositing User: G. J. White
Date Deposited: 30 May 2012 14:35
Last Modified: 30 Nov 2016 14:07
URI: http://oro.open.ac.uk/id/eprint/33332
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