Period Changes in RV Tauri Stars: Observations and Simulations

Details Period Changes in RV Tauri Stars: Observations and Simulations Period Changes in RV Tauri Stars: Observations and Simulations

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992javso..21...86p&link_type=abstract

The Journal of the American Association of Variable Star Observers, vol. 21, no. 2, p. 86-92

Physics

4

Scientific paper

We have determined the times and magnitudes of minimum brightness of two RV Tauri stars (SS Gem and V Vul) using data from the AAVSO and from the literature. We have used these to construct (O-C) diagrams. These are dominated by cyclic features with time scales ranging from several to several hundred pulsation periods. By constructing simulated (O-C) diagrams, we have shown that the observed (O-C) diagrams could be explained by the accumulation of random, cycle-to-cycle fluctuations in period, as in the case of most Mira stars.

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