Little, L.T.; Dent, W. R. F.; Heaton, B.; Davies, S. R. and White, G. J.
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Maps of NH3 (1,1) and (2,2) inversion line emission from the molecular cloud G35.2N have been made at 40-arcsec resolution with the 100-m Effelsberg telescope and at 7-arcsec resolution with the VLA. The source is revealed as a large rotating disc, viewed edge-on, of diameter 1.8 pc. Near the centre of this outer structure is a more dense coaxial rotating inner disc (diameter ~0.4 pc, thickness ≦0.08 pc) of mass ~150 M⊙. A comparison of the (1,1) and (2,2) emission from the inner disc shows that its average density decreases towards the centre, while its temperature rises from ~25 to >100K. It appears that the inner disc is capable of channelling the bipolar outflow from the central source observed in CO.
|Item Type:||Journal Article|
|Copyright Holders:||1985 Royal Astronomical Society|
|Keywords:||molecular clouds; radio sources (astronomy); stellar winds; ammonia; astronomical maps; astronomical models; infrared stars; mass distribution; rotating disks|
|Academic Unit/Department:||Science > Physical Sciences|
|Interdisciplinary Research Centre:||Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)|
|Depositing User:||Glenn White|
|Date Deposited:||07 Jun 2012 15:54|
|Last Modified:||17 Jul 2013 08:49|
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