Studies of Mira and semiregular variables using visual databases
@article{Bedding1999StudiesOM,
title={Studies of Mira and semiregular variables using visual databases},
author={Timothy R. Bedding and Blair C. Conn and Albert A. Zijlstra},
journal={arXiv: Astrophysics},
year={1999}
}We use wavelets to investigate period and amplitude changes in Mira and semiregular variables and found a variety of behaviours. Period and amplitude changes often go together, perhaps because changes in amplitude are causing period changes via non-linear effects.
5 Citations
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The SC and CS stars are thermal-pulsing asymptotic giant branch stars with a C/O ratio close to unity. Within this small group, the Mira variable BH Cru recently evolved from spectral type SC…
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- Physics
- 2014
The maxima of Mira are studied in order to evaluate both the frequency of one and of two consecutive bright apparitions eventually as observed by the Magi and the correlation between two following maxima is found: if a bright maximum occurs it is more probable that the following is a faint one.
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We present the discovery of a huge (19′ × 16′) dust ring surrounding a bright (V = 10.60) red star. The dust ring has, at D = 700 pc, a diameter of 4 pc and a central hole of ~1.5 pc across. Part of…
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- 2001
We gathered the maxima of Mira Ceti (1596-2000) in order to evaluate the frequency of two consecutive bright apparitions. We did an evaluation of the correlation between two following maxima in order…
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