56 citations · 1k across the 70 of their papers we have counts for
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Dynamical Masses and Radiative Transfer Modeling of HD 698: a Be Binary in Evolutionary Transition
Ilfa A. Gabitova, Alex C. Carciofi, Tajan H. de Amorim +13
We present a detailed analysis of the early post-mass-transfer binary HD 698 (V742 Cas) combining high-resolution optical spectroscopy, long-baseline interferometry, and radiative-…
The B[e] Phenomenon in Supergiants. A Result of Mass Transfer in Binaries, Mergers, or What?
Anatoly S. Miroshnichenko, Sergey V. Zharikov, Nadezhda L. Vaidman +1
The B[e] phenomenon discovered nearly 50 years ago features the presence of forbidden emission lines due to extended and dense circumstellar gas and large IR excesses due to the ra…
Investigation of the Nature of the B[e] Star CI Cam in the Optical Range
E. A. Barsukova, A. N. Burenkov, V. P. Goranskij +10
We report the results of 24 years of photometric and spectroscopic monitoring of CI Cam since its outburst in 1998. In the early years of our research, we identified a system compo…
Optical spectral observations of three binary millisecond pulsars
A. V. Bobakov, A. V. Karpova, S. V. Zharikov +3
We present the results of optical spectroscopy of stellar companions to three binary millisecond pulsars, PSRs J06212514, J23171439 and J23024442, obtained with the Gran T…
The Z Camelopardalis-type star AY Piscium: stellar and accretion disk parameters
Jan Kára, Sergey Zharikov, Marek Wolf +5
We present a new study of the Z~Cam-type eclipsing cataclysmic variable AY~Piscium with the aim of determining the fundamental parameters of the system and the structure of the acc…
Revisiting FS Aurigae and its triple cataclysmic variable system hypothesis
Carlos E. Chavez, Andres Aviles, Nikolaos Georgakarakos +4
A very long term variability (VLPP), with period of 875 days, was observed in the long-term light curve of FS Aurigae in 2011. This periodicity was calculated on 6 cycles. We re-ex…
Stellar and accretion disk parameters of the close binary HD 50526
J. A. Rosales, R. E. Mennickent, G. Djurašević +5
We present a photometric and spectroscopic study of HD 50526, an ellipsoidal binary member of the group Double Periodic Variable stars. Performing data-mining in photometric survey…
The period-gap cataclysmic variable CzeV404 Her: A link between SW Sex and SU UMa systems
J. Kára, S. Zharikov, M. Wolf +4
Context: We present a new study of the eclipsing cataclysmic variable CzeV404 Her (Porb = 0.098 d) that is located in the period gap. Aims: This report determines the origin of the…
BG Tri an example of a low inclination RW Sex-type novalike
M. S. Hernandez, G. Tovmassian, S. Zharikov +4
We analysed a wealth of optical spectroscopic and photometric observations of the bright (V=11.9) cataclysmic variable BG Tri. TheGaiaDR2 parallax gives a distance d=334(8)pc to th…
Structure of accretion flows in the nova-like cataclysmic variable RW Tri
G. Subebekova, S. Zharikov, G. Tovmassian +5
We obtained photometric observations of the nova-like cataclysmic variable RW Tri and gathered all available AAVSO and other data from the literature. We determined the system para…
Searching for optical companions to four binary millisecond pulsars with the Gran Telescopio Canarias
A. Yu. Kirichenko, A. V. Karpova, D. A. Zyuzin +6
We report on multi-band photometric observations of four binary millisecond pulsars with the Gran Telescopio Canarias. The observations led to detection of binary companions to PSR…
Optical detection of the black widow binary PSR J2052+1219
S. Zharikov, A. Kirichenko, D. Zyuzin +2
We present optical time-resolved multi-band photometry of the black widow binary millisecond pulsar J2052+1219 using direct-imaging observations with the 2.1m telescope of Observat…
Detection of the PSR J1741+1351 white dwarf companion with the Gran Telescopio Canarias
D. A. Zyuzin, A. Yu. Kirichenko, A. V. Karpova +4
We report detection of the binary companion to the millisecond pulsar J1741+1351 with the Gran Telescopio Canarias. The optical source position coincides with the pulsar coordinate…
The ultracool helium-atmosphere white dwarf companion of PSR J0740+6620?
D. M. Beronya, A. V. Karpova, A. Yu. Kirichenko +4
We report the detection of the likely companion of the binary millisecond pulsar J0740+6620 with the Gran Telescopio Canarias in the and bands. The position of the detect…
From outburst to quiescence: spectroscopic evolution of V1838 Aql imbedded in a bow-shock nebula
J. V. Hernández Santisteban, J. Echevarría, S. Zharikov +15
We analyse new optical spectroscopic, direct-image and X-ray observations of the recently discovered a high proper motion cataclysmic variable V1838 Aql. The data were obtained dur…
Optical identification of the binary companion to the millisecond PSR J2302+4442 with the Gran Telescopio Canarias
A. Yu. Kirichenko, S. V. Zharikov, D. A. Zyuzin +4
We report detection of the binary companion to the millisecond pulsar J2302+4442 based on the deep observations performed with the Gran Telescopio Canarias. The observations reveal…
The Remarkable Be+sdOB Binary HD 55606 I: Orbital and Stellar Parameters
S. Drew Chojnowski, Jonathan Labadie-Bartz, Thomas Rivinius +20
Prompted by peculiar spectroscopic variability observed in SDSS/APOGEE -band spectra, we monitored the Be star HD 55606 using optical spectroscopy and found that it is an exotic…
Toward Understanding the B[e] Phenomenon. VII. AS 386, a single-lined binary with a candidate black hole component
S. A. Khokhlov, A. S. Miroshnichenko, S. V. Zharikov +24
We report the results of spectroscopic and photometric observations of the emission-line object AS 386. For the first time, we found that it exhibits the B[e] phenomenon and fits t…
Intriguing X-ray and optical variations of the gamma Cas analog HD45314
G. Rauw, Y. Nazé, M. A. Smith +11
A growing number of Be and Oe stars, named the gamma Cas stars, are known for their unusually hard and intense X-ray emission. This emission could either trace accretion by a compa…
The structure of accretion flows in nova-like cataclysmic variables: RW Sextantis and 1RXS J064434.5+334451
M. S. Hernandez, S. Zharikov, V. Neustroev +1
New time-resolved optical spectroscopic echelle observations of the nova-like cataclysmic variable RW Sextantis were obtained, with the aim to study the properties of emission feat…
The remarkable outburst of the highly evolved post-period-minimum dwarf nova SSS J122221.7-311525
V. V. Neustroev, T. R. Marsh, S. V. Zharikov +22
We report extensive 3-yr multiwavelength observations of the WZ Sge-type dwarf nova SSS J122221.7-311525 during its unusual double superoutburst, the following decline and in quies…
Doppler tomography of the Double Periodic Variable HD 170582 at low and high stage
R. E. Mennickent, S. Zharikov, M. Cabezas +1
HD170582 is an interacting binary of the Double Periodic Variable (DPV) type, showing ellipsoidal variability with a period of 16.87 days along with a long photometric cycle of 587…
Long orbital period pre-polars containing an early K-type donor stars. Bottleneck accretion mechanism in action
G. Tovmassian, D. Gonzalez-Buitrago, S. Zharikov +6
We studied two objects identified as a Cataclysmic Variables (CVs) with periods exceeding the natural boundary for Roche lobe filling ZAMS secondary stars. We present observational…
Near-infrared observations of PSR J1357-6429
D. Zyuzin, S. Zharikov, Yu. Shibanov +3
PSR J13576429 is a young radio pulsar that was detected in X-rays and -rays. We present the high spatial resolution near-infrared imaging of the pulsar field in , and…