A spectral survey of the Orion Nebula from 455-507 GHz

White, G.J. and Araki, M. and Greaves, J.S. and Ohishi, M. and Higginbottom, N.S. (2003) A spectral survey of the Orion Nebula from 455-507 GHz. Astronomy & Astrophysics, 407 (2). pp. 589-607. ISSN 0004-6361. (The full text of this publication is not available from this repository)

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Abstract

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 T-mb similar to 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)(2)O, CH3CN, C2H3CN, C2H5CN and HCOOCH3 which make up similar to72% of the total number of lines; unidentified lines similar to13%; and other lines the remaining similar to15% of the total. Rotational temperatures and column densities derived using standard rotation diagram analysis techniques were found to range from 70-300 K, and 10(14)-10(17) cm(2) respectively.

Item Type: Article
Additional information: 57 E D P SCIENCES 708CV
Uncontrolled keywords: molecules; star formation; molecular cloud SUBMILLIMETER-WAVE SPECTRUM; MOLECULAR LINE SURVEY; GAUCHE-ETHYL-ALCOHOL; MILLIMETER-WAVE; CLOUD CORE; ATMOSPHERIC TRANSMISSION; LABORATORY ASSIGNMENTS; INTERSTELLAR-MEDIUM; SAGITTARIUS B2; STAR FORMATION
Subjects: Q Science
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences
Depositing User: Maggie Francis
Date Deposited: 12 Sep 2008 13:51
Last Modified: 14 Jan 2010 14:42
Resource URI: http://kar.kent.ac.uk/id/eprint/10927 (The current URI for this page, for reference purposes)
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