Greaves, J. S. and White, Glenn J.
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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 Article|
|Copyright Holders:||1991 European Southern Observatory|
|Keywords:||interstellar matter; line spectra; microwaves; molecular clouds; radio astronomy; algorithms; electron transitions; frequency ranges; radio telescopes|
|Academic Unit/Department:||Science > Physical Sciences
|Interdisciplinary Research Centre:||Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)|
|Depositing User:||G. J. White|
|Date Deposited:||25 May 2012 09:29|
|Last Modified:||23 Feb 2016 18:00|
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