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Time variations of interstellar water masers in HII regions

White, G. J. and Macdonald, G. H. (1980). Time variations of interstellar water masers in HII regions. In: Interstellar Molecules, 6-10 August 1979, Mont Tremblant, Quebec, Canada, p. 593.

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Abstract

Previous studies of time variations in water vapour sources associated with HII regions by Sullivan (1971, 1973) and Gammon (1976) have revealed variability on time-scales of 106-107s. Sullivan monitored nine sources over a period of 14 months and Gammon observed W49 (H2O) for 13 months. In an attempt to gather more complete information on the variability of intertellar water masers we have monitored 18 sources for the 32-month period 1974 September-1977 May.

Item Type: Conference Item
Copyright Holders: 1980 International Astronomical Union
Extra Information: Interstellar Molecules,
Proceedings of the IAU Symposium No. 87
held 6-10 August 1979 in Mont Tremblant, Quebec, Canada.
Edited by B.H. Andrews.
Dordrecht: D. Reidel Publishing Co., 1980
pp.593-598
Keywords: HII regions; interstellar masers; spectrum analysis; water masers; water vapor; annual variations; astronomical catalogs; physical properties; radio emission; statistical analysis; stellar evolution
Academic Unit/Department: Science > Physical Sciences
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Item ID: 33815
Depositing User: Glenn White
Date Deposited: 11 Jun 2012 12:25
Last Modified: 13 Jun 2012 03:51
URI: http://oro.open.ac.uk/id/eprint/33815
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