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A high resolution millimetre and submillimetre study of W3

Richardson, K. J.; Sandell, G.; White, Glenn J.; Duncan, W. D. and Krisciunas, K. (1989). A high resolution millimetre and submillimetre study of W3. Astronomy & Astrophysics, 221(1) pp. 95–99.

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Abstract

The continuum bolometer receiver on the James Clerk Maxwell telescope has been used to map the dense core of the star formation region W3 with a spatial resolution of 15-20 arcsec. At 350 and 800 μm, the region appears as two principal peaks around the known IR sources IRS4 and IRS5, while at 1100 μm, a further peak is noted which is interpreted as being due to free-free emission around IRS2. Taking into account the free-free contribution to the intensity, the continuum dust emission from the region is found to be consistent with optically thin emission at all of the three wavelengths considered. Values for the dust optical depth, hydrogen column density, mass, and central density have been obtained for each of the main peaks.

Item Type: Journal Article
Copyright Holders: 1989 European Southern Observatory
ISSN: 1432-0746
Keywords: HII regions; millimeter waves; molecular clouds; star formation; submillimeter waves; astronomical maps; bolometers; cosmic dust; infrared sources (astronomy); telescopes
Academic Unit/Department: Science > Physical Sciences
Science
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Item ID: 33346
Depositing User: G. J. White
Date Deposited: 18 Apr 2012 15:28
Last Modified: 23 Feb 2016 17:37
URI: http://oro.open.ac.uk/id/eprint/33346
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