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- I. Bikmaev2 profiles43 · h 27
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- Kazan Federal UniversityRU62 papers
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7 papers · 1 filter
Study of Massive OBA Stars with X-ray Emission
E. A. Nikolaeva, I. F. Bikmaev, E. N. Irtuganov +3
A study of the physical parameters of a sample of 15 OBA-type stars with detected X-ray emission from the Spektr-RG/eROSITA telescope is presented. While X-ray emission from cool s…
Spectral Evolution and Photo-ionization Analysis of Nova Cas 2020 (V1391 Cas)
Gamal M. Hamed, Hasan. H. Esenoglu, Almaz. I. Galeev
We present spectroscopic observations of Nova Cas 2020(V1391 Cas) obtained using the Russian Turkish Telescope during different stages of its 2020 outburst. We followed the spectra…
MASTER OT J172758.09+380021.5: a peculiar ER UMa-type dwarf nova, probably a missed nova in the recent past
E. Pavlenko, T. Kato, K. Antonyuk +15
A CCD photometry of the dwarf nova MASTER OT J172758.09 +380021.5 was carried out in 2019 during 134 nights. Observations covered three superoutbursts, five normal outbursts and qu…
Full orbital solution for the binary system in the northern Galactic disc microlensing event Gaia16aye
Łukasz Wyrzykowski, P. Mróz, K. A. Rybicki +182
Gaia16aye was a binary microlensing event discovered in the direction towards the northern Galactic disc and was one of the first microlensing events detected and alerted to by the…
A Jupiter-mass planet around the K0 giant HD 208897
M. Yılmaz, B. Sato, I. Bikmaev +9
For over 10 years, we have carried out a precise radial velocity (RV) survey to find substellar companions around evolved G,K-type stars to extend our knowledge of planet formation…
Investigation of the new cataclysmic variable 1RXS J180834.7+101041
D. G. Yakin, V. F. Suleimanov, N. V. Borisov +2
We present the results of our photometric and spectroscopic studies of the new eclipsing cataclysmic variable star 1RXS J180834.7+101041. Its spectrum exhibits double-peaked hydrog…