High time resolution observations of two Be stars ( K, Dra and ɣCas) have been made with an Image Isocon television camera in an attempt to detect rapid radial velocity and/or intensity variations of the Hydrogen emission lines. Analysis of variance tests have been used to determine the significance of possible variations. Fluctuations of the intensity of the H alpha line of ɣ Cas were seen on a time scale of a few minutes. Upper limits to the radial velocity variations were imposed by an apparent non-linear expansion of the camera reading beam scanning raster. The variations of H alpha for K Dra were marginally significant, showing a slow change in the position of the line with no significant change in intensity over the 30 minutes of observation. No significant variations were present in observations of H beta and H gamma of ɣCas. / Science, Faculty of / Physics and Astronomy, Department of / Graduate
Identifer | oai:union.ndltd.org:UBC/oai:circle.library.ubc.ca:2429/18883 |
Date | January 1974 |
Creators | Thompson, Harold Ian Bruce |
Source Sets | University of British Columbia |
Language | English |
Detected Language | English |
Type | Text, Thesis/Dissertation |
Rights | For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use. |
Page generated in 0.0017 seconds