Possible pulsations of the M giant in MWC560
Abstract
MWC 560 and other peculiar symbiotic binary, CH Cyg, have been classified as the prototypes of the new subclass of symbiotic systems - propellers, with accretion onto a magnetic white dwarf being the source of activity. The companion of the hot component in this model should demonstrate stellar wind with relatively high mass-loss. It can be expected rather a late AGB, Mira or semiregular variable (SR) than any normal red giant.Our analysis performed for the I band shows that the M giant probably belongs to such kind of stars and pulsates with a period of about 5 months.
Cite
@article{arxiv.astro-ph/0210447,
title = {Possible pulsations of the M giant in MWC560},
author = {Sylwia M. Frackowiak and Maciej Mikolajewski and Toma Tomov},
journal= {arXiv preprint arXiv:astro-ph/0210447},
year = {2007}
}
Comments
4 pages, 2 figures, to appear in the proceedings of "Symbiotic stars probing stellar evolution", R.L.M.Corradi, J.Mikolajewska, T.J.Mahoney eds., 2002, ASP Conference Series, in press