33 citations · 104 across the 10 of their papers we have counts for
10 papers
First tidal disruption events discovered by SRG/eROSITA: X-ray/optical properties and X-ray luminosity function at z<0.6
S. Sazonov, M. Gilfanov, P. Medvedev +22
We present the first sample of tidal disruption events (TDEs) discovered during the SRG all-sky survey. These 13 events were selected among X-ray transients detected in the 0<l<180…
The intermediate nebular phase of SN 2014J: onset of clumping as the source of recombination
P. A. Mazzali, I. Bikmaev, R. Sunyaev +6
At the age of about 1 year, the spectra of most Type Ia supernovae are dominated by strong forbidden nebular emission lines of FeII and FeIII. Later observations (at about 2 years)…
Discovery of Standstills in the SU UMa-Type Dwarf Nova NY Serpentis
Taichi Kato, Elena P. Pavlenko, Nikolaj V. Pit +40
We found that the SU UMa-type dwarf nova NY Ser in the period gap [orbital period 0.097558(6) d] showed standstills twice in 2018. This is the first clear demonstration of a stands…
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…
Spectroscopic study of the optical counterpart to the Fast X-ray Transient IGR J17544-2619 based on observations at the 1.5-m RTT-150 telescope
I. F. Bikmaev, E. A. Nikolaeva, V. V. Shimansky +7
We present the results of our long-term photometric and spectroscopic observations at the Russian-Turkish RTT-150 telescope for the optical counterpart to one of the best-known sou…
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…
Additional spectroscopic redshift measurements for galaxy clusters from the First Planck Catalogue
V. S. Vorobyev, R. A. Burenin, I. F. Bikmaev +10
We present the results of spectroscopic redshift measurements for the galaxy clusters from the first all-sky Planck catalogue of the Sunyaev-Zeldovich sources, that have been mostl…
Investigation of CygOB2 #11 (O5 Ifc) by modeling its atmosphere
Olga Maryeva, Roman Zhuchkov, Eugene Malogolovets
We continue the study of O-supergiants belonging to the association Cyg OB2 using moderate-resolution spectra. In this paper we present results of the modeling of the stellar atmos…
Medium resolution spectroscopy of the supergiant O3If* Cyg OB2 No7
Olga Maryeva, Roman Zhuchkov
We examine the feasibility of using medium resolution spectra for determining the parameters of atmospheres of hot stars by means of numerical simulations. We chose the star Cyg OB…
Fitting the Chandra LETG spectrum of SS Cygni in outburst with model atmosphere spectra
V. F. Suleimanov, C. W. Mauche, R. Ya. Zhuchkov +1
The Chandra / LETG spectrum of SS Cyg in outburst shows broad (\approx 5 A) spectral features that have been interpreted as a large number of absorption lines on a blackbody contin…