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Peculiar outburst of the newly revealed variable star V838 Mon
D. Kolev, M. Mikolajewski, T. Tomov +4
We present photometric and high- and low-resolution spectroscopic observations of the unusual outburst of V838 Mon. The data were collected at the NAO Rozhen, Bulgaria and at the T…
HP Lyr - possibly the hottest RV Tau type object
Dariusz Graczyk, Maciej Mikolajewski, Laurits Leedjarv +4
We report Johnson's UBVRI photometric and optical spectroscopic observations of a long period variable HP Lyr which up to now has been considered an eclipsing binary with a period…
Possible pulsations of the M giant in MWC560
Sylwia M. Frackowiak, Maciej Mikolajewski, Toma Tomov
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 wh…
The double outburst of the unique object V838 Mon
J. P. Osiwala, M. Mikolajewski, T. Tomov +4
We present spectroscopic and photometric observations of the recent peculiar outburst of V838 Mon, carried out at Rozhen and Torun observatories. Our data cover a period of three m…
Magnetic propeller in symbiotic stars
Alexander Panferov, Maciej Mikolajewski
Rapidly spinning magnetic white dwarfs in symbiotic stars may pass through the propeller stage. It is believed that a magnetic propeller acts in two such stars CH Cyg and MWC 560.…