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Synopsis of by Dra and II PEG Light Curves: Variability and PossibleEvidence of Differential Rotation(+)

Published online by Cambridge University Press:  12 April 2016

M. Rodonò ,
V. Pazzani  and
G. Cutispoto
M. Rodonò
Affiliation:
Osservatorio Astrofisico and Università di Catania, Italy
V. Pazzani
Affiliation:
Osservatorio Astrofisico and Università di Catania, Italy
G. Cutispoto
Affiliation:
Osservatorio Astrofisico and Università di Catania, Italy

Extract

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BY Dra (MOVe+MOVe) and II Peg (K2IV-III) are well known noneclipsing spectroscopic binary systems showing the low-amplitude quasiperiodic photometric variability that is typical of spotted stars.

Since the discovery of their variability (Chugainov 1966, Eggen 1968) additional accurate photometry has been carried out (cf. Rodono 1982). On account of their highly variable light curves (LC), we have reanalyzed all the available observations and divided the original data into shorter time-interval sets, so that overlapping LCs with different shape could be separated. Additional LCs obtained at Catania Observatory till 198l were also included.

Type
Session II: Observed Activity in Red-Dwarfs
Information
International Astronomical Union Colloquium , Volume 71: Activity in Red-Dwarf Stars , 1983 , pp. 179 - 184
Copyright
Copyright © Reidel 1983

Footnotes

1

Partly based on observations by the IUE collected at the Villafranca Satellite Tracking Station of the ESA.

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