White, G. J. and Macdonald, G.H.
(1979).
![[img]](http://oro.open.ac.uk/style/images/fileicons/application_pdf.png)
|
PDF (Version of Record)
- Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (462kB) |
| URL: | http://adsabs.harvard.edu/abs/1979MNRAS.188..745W |
|---|---|
| Google Scholar: | Look up in Google Scholar |
Abstract
Fourteen water maser sources associated with HII regions have been monitored over the period September 1974-May 1977. Time variations have been observed with a range of time-scales from days to years. A statistical analysis of the short- and long-term variations is performed and related variability in features of similar velocity is examined. The time variations must be due to changes in the pump input, geometry or other physical properties of the maser regions but at present no adequate theory exists to describe the complex behavior observed.
| Item Type: | Article |
|---|---|
| Copyright Holders: | 1979 Royal Astronomical Society |
| ISSN: | 1365-2966 |
| 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/School: | Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences Faculty of Science, Technology, Engineering and Mathematics (STEM) |
| Interdisciplinary Research Centre: | Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR) |
| Item ID: | 33276 |
| Depositing User: | G. J. White |
| Date Deposited: | 28 Mar 2012 13:20 |
| Last Modified: | 29 Nov 2016 22:46 |
| URI: | http://oro.open.ac.uk/id/eprint/33276 |
| 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.