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A Spectral Survey of Molecules in the Orion Nebula from 455 – 507 GHz: An Inventory of Prebiotic Chemistry

Published online by Cambridge University Press:  19 September 2017

Glenn J. White ,
M. Araki ,
J. S. Greaves  and
M. Ohishi
Glenn J. White
Affiliation:
Physics Department, University of Kent, CT2 7NR England
M. Araki
Affiliation:
Institute for Physical Chemistry, University of Basel, Switzerland
J. S. Greaves
Affiliation:
Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, Scotland
M. Ohishi
Affiliation:
National Astronomical Observatory of Japan, Mitaka, Japan

Abstract

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The results of a submillimetre wavelength spectral line survey between 455.1 – 507.4 GHz of the Orion-KL hot cloud core are reported. 254 lines were detected, and are associated with 30 different molecular species or their isotopomeric variants. Apart from the 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 – 600 K, and 1014 – 1017cm2 respectively.

Type
Astrochemistry
Information
Symposium - International Astronomical Union , Volume 213: Bioastronomy 2002: Life Among the stars , 2004 , pp. 169 - 172
Copyright
Copyright © Astronomical Society of the Pacific 2004 

References

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