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Possible Periodic Components in the Flickering of CH Cyg and MWC 560

Published online by Cambridge University Press:  12 April 2016

M. Mikołajewski ,
T. Tomov ,
A. Dapergolas  and
Y. Bellas-Velidis
M. Mikołajewski
Affiliation:
Nicolaus Copernicus University, Torun, Poland
T. Tomov
Affiliation:
National Astronomical Observatory Rozhen, Bulgaria
A. Dapergolas
Affiliation:
National Observatory of Athens, Greece
Y. Bellas-Velidis
Affiliation:
National Observatory of Athens, Greece

Extract

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CH Cyg and MWC 560 are very peculiar symbiotic binaries consisting of an M giant and a white dwarf companion. The systems have many features in common. In particular, both show occasional eruptions with sub-Eddington luminosity, followed by the appearance of high-velocity jets. Recently, Mikołajewski, Mikołajewska & Tomov (1995) have proposed a model of activity for these systems with a rapidly rotating magnetic white dwarf accreting from the M giant’s wind. Two states of activity are possible: propeller and accretor. Although, both stars spend most time in the propeller state, occasional propeller-accretor (and vice versa) transitions may give rise to bipolar outflows and rapid jet formations. Mikołajewski et al. (1995) also proposed to distinguish a new subclass of interacting binaries – propeller stars – with CH Cyg and MWC 560 being the prototypes.

Type
Novae & Symbiotic Stars
Information
International Astronomical Union Colloquium , Volume 158: Cataclysmic Variables and Related Objects , 1996 , pp. 341 - 342
Copyright
Copyright © Kluwer 1996

References

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