White, Glenn J.; Araki, M.; Greaves, J. S.; Ohishi, M. and Higginbottom, N. S.
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|DOI (Digital Object Identifier) Link:||http://doi.org/10.1051/0004-6361:20030841|
|Google Scholar:||Look up in Google Scholar|
The results of a submillimetre wavelength spectral line survey between 455.1-507.4 GHz of the Orion-KL hot cloud core are reported. A total of 254 lines were detected to a main beam brightness temperature sensitivity Tmb ~ 1-3 K. The detected lines are identified as being associated with 30 different molecular species or their isotopomeric variants. The strongest line detected was the J = 4-3 transition of the CO molecule. Apart from abundant diatomic rotors such as CO and CS, the spectrum is dominated by SO, SO2 and CH3OH and large organic molecules such as (CH3)2O, CH3CN, C2H3CN, C2H5CN and HCOOCH3 which make up ~72% of the total number of lines; unidentified lines ~13%; and other lines the remaining ~15% of the total. Rotational temperatures and column densities derived using standard rotation diagram analysis techniques were found to range from 70-300 K, and 1014-1017 cm2 respectively.
|Item Type:||Journal Article|
|Copyright Holders:||2003 ESO|
|Keywords:||molecules; star formation; molecular cloud|
|Academic Unit/Department:||Science > Physical Sciences
|Interdisciplinary Research Centre:||Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)|
|Depositing User:||Astrid Peterkin|
|Date Deposited:||25 Jan 2007|
|Last Modified:||24 Feb 2016 19:00|
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