5 papers
The Optical Study of the Eclipsing Polar SDSS J002637.06+242915.6
V. Yu. Kochkina, A. I. Kolbin, T. A. Fatkhullin +2
We have analyzed phase-resolved photometric and spectroscopic observations of the eclipsing polar SDSS J002637.06+242915.6. The light curve has a M-shaped bright phase that was rep…
An X-ray and Optical Study of the Dwarf Nova Candidate OGLE-BLG-DN-0064
A. B. Sibgatullin, V. I. Dodon, I. I. Galiullin +3
The source OGLE-BLG-DN-0064 (hereafter OGLE64) was classified as a potential dwarf nova based on its regular outburst activity revealed by the OGLE optical survey. In this paper, w…
Gaia 19cwm -- an eclipsing dwarf nova of WZ Sge type with a magnetic white dwarf
A. I. Kolbin, T. A. Fatkhullin, E. P. Pavlenko +6
The spectral and photometric studies of the cataclysmic variable Gaia 19cwm (or ZTF19aamkwxk) have been performed. Based on the analysis of long-term variability, it is concluded t…
Monitoring of DDO68 'Northern Ring' SF regions during years 2016-2023
S. A. Pustilnik, Y. A. Perepelitsyna, A. S. Vinokurov +6
DDO68 is a star-forming (SF) dwarf galaxy residing in a nearby void. Its gas metallicity is among the lowest known in the local Universe, with parameter 12+log(O/H) in the range of…
Spectroscopic and photometric study of the new eclipsing polar Gaia23cer
A. I. Kolbin, E. P. Pavlenko, V. Yu. Kochkina +11
We present the results of the optical study of the new eclipsing polar Gaia23cer. We analyzed the brightness variability of the polar in high ($\langle r \rangle \approx 16.5\mathr…