Richardson, K. J.; Sandell, G.; White, Glenn J.; Duncan, W. D. and Krisciunas, K.
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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|
|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
|Interdisciplinary Research Centre:||Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)|
|Depositing User:||G. J. White|
|Date Deposited:||18 Apr 2012 15:28|
|Last Modified:||21 Jan 2016 00:58|
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