Observations of CO J = 3 → 2 Emission from Molecular Clouds

White, Glenn J.; Phillips, J. P.; Watt, Graeme D.

doi:10.1007/978-94-009-7778-5_33

Glenn J. White²,
J. P. Phillips² &
Graeme D. Watt²

Part of the book series: Astrophysics and Space Science Library ((ASSL,volume 93))

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Abstract

Observational studies of interstellar Carbon Monoxide have enabled astronomers to gather a wealth of information on the structure, energetics and kinematics of galactic molecular clouds. The majority of this information has been obtained from observations of the CO J = 1 → O rotational transition at 115.271 GHz (λ = 2.6 mm). Studies of higher rotational transitions have awaited the development of low-noise receiver systems for frequencies above 200 GHz. In this paper we report new data obtained using the 3.8 m United Kingdom Infrared Telescope (UKIRT) with the QMC and UKIRT submillimeter heterodyne receivers. These cryogenic heterodyne systems have system noise temperatures varying between 270 K at 220 GHz and 400 K at 370 GHz.

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Authors and Affiliations

Molecular Astronomy Group, Physics Department, Queen Mary College, Mile End Road, London, El 4NS, England
Glenn J. White, J. P. Phillips & Graeme D. Watt

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Glenn J. White
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J. P. Phillips
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Graeme D. Watt
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Editors and Affiliations

Dominion Radio Astrophysical Observatory, Herzberg Institute of Astrophysics, National Research Council of Canada, Penticton, B.C., Canada
R. S. Roger & Peter E. Dewdney &

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White, G.J., Phillips, J.P., Watt, G.D. (1982). Observations of CO J = 3 → 2 Emission from Molecular Clouds. In: Roger, R.S., Dewdney, P.E. (eds) Regions of Recent Star Formation. Astrophysics and Space Science Library, vol 93. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-7778-5_33

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DOI: https://doi.org/10.1007/978-94-009-7778-5_33
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-009-7780-8
Online ISBN: 978-94-009-7778-5
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