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Title: Search for rapid V/R variability in Eta CEN
Authors: Ghosh, K. K
Keywords: B Stars;H Alpha Line;Variable Stars;Emission Spectra;Error Analysis;Radial Velocity;Standard Deviation
Issue Date: Oct-1989
Publisher: Royal Astronomical Society
Citation: Monthly Notices Royal Astronomical Society, Vol. 240, pp. 637 - 645
Abstract: In order to search for rapid V/R variability in the Be star, Eta Cen, a series of H-alpha profiles of this star were observed on three nights between May 28 and June 3, 1986. A method of estimating the standard deviation value (sigma) of V/R ratio measurements is described. From the results of the H-alpha profiles, it was found that few profiles displayed rapid V/R variations which were beyond the 3-sigma limit, with no rapid variations of equivalent widths and peak separations of the two emission components. It was also found that rapid V/R and radial velocity variations of the H-alpha profiles were in close agreement. Low-amplitude night-to-night variations of the V/R ratio were also present in Eta Cen during the interval of the observations.
ISSN: 0035-8711
Appears in Collections:IIAP Publications

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