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Some Important Results From Two Photometric Campaigns on Short Term Variability in Be Stars

Published online by Cambridge University Press:  23 September 2016

C.R. Stagg*
Affiliation:
Department of Astronomy, University of Toronto, Toronto, Ontario, CanadaM5S 1A1

Extract

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In 1983 and 1984 a programme of UBV observations was carried out to set up a network of standard stars, identify short term variables, and analyse the variability of the 86 bright (V ≳ 6.5) southern (δ < -20°) Be stars.

The timing of the observations was designed specifically to reveal short term variability. Each group of Be and comparison stars was observed at least four times. Where possible, the first two sets of observations were made on one night and the next two sets on the next night (and sometimes a fifth set of observations was also made). Eleven Be stars were identified as possible short or intermediate term variables (Stagg, in preparation). These included the Be star 28 ω CMa, whose V and B-V (but not U-B) variations were consistent with the spectroscopic period of 1.37 days found by Baade (1982).

Type
IIA. The Underlying Stars: Observations
Copyright
Copyright © Cambridge University Press 1987

References

Baade, D. (1982). Astr. Astrophys., 105, 6575.Google Scholar