Optical monitoring of QR And during the years 1999 - 2001 revealed that the photometric orbital modulation displays significant scatter. We found that it is caused mainly by the long-term variations of the systemic brightness.
Optical monitoring of QR And during the years 1999 - 2001 revealed that the photometric orbital modulation displays significant scatter. We found that it is caused mainly by the long-term variations of the systemic brightness. (en)