The Open UniversitySkip to content

A 257-273 GHz spectral survey of the OMC1 cloud core

Greaves, J. S. and White, Glenn J. (1991). A 257-273 GHz spectral survey of the OMC1 cloud core. Astronomy & Astrophysics, 91 pp. 237–258.

Full text available as:
PDF (Version of Record) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (470kB)
Google Scholar: Look up in Google Scholar


A spectral line survey of the OMC1 cloud core has been obtained, over the frequency range 257.04-273.02 GHz, using the James Clerk Maxwell 15-m submillimeter telescope. Additional observations have been made centered at 229.4, 231.2, 237.3, and 239.1 GHz. A new algorithm was used to deconvolve the original double-sideband data, and its performance is critically discussed.

181 distinct spectral lines were detected, ~ 7 of which are not identifiable with known molecular transitions. Between 18 and 21 molecular species were detected, including up to 10 isotopically-substituted forms. The line strengths are greater by a factor of 1.9 (on average) than in an earlier OVRO survey orf similar frequencies, made using a larger beam. The current results therefore provide a substantial data base of typical line strengths for future high-resolution studies of the OMC1 core.

Item Type: Journal Item
Copyright Holders: 1991 European Southern Observatory
ISSN: 1286-4846
Keywords: interstellar matter; line spectra; microwaves; molecular clouds; radio astronomy; algorithms; electron transitions; frequency ranges; radio telescopes
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 33337
Depositing User: G. J. White
Date Deposited: 25 May 2012 09:29
Last Modified: 08 Dec 2018 06:35
Share this page:

Download history for this item

These details should be considered as only a guide to the number of downloads performed manually. Algorithmic methods have been applied in an attempt to remove automated downloads from the displayed statistics but no guarantee can be made as to the accuracy of the figures.

Actions (login may be required)

Policies | Disclaimer

© The Open University   contact the OU