Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- D. Yakovlev3 profiles81 · h 41
- A. Kamenshchik79 · h 37
- R. Sunyaev2 profiles70 · h 93
- I. Karachentsev68 · h 53
- L. Mashonkina2 profiles67 · h 34
- R. Faustov67 · h 40
- M. Revnivtsev2 profiles65 · h 36
- M. Bayer2 profiles63 · h 57
- Y. Lozovik58 · h 44
- V. Galkin53 · h 38
- A. Kamchatnov49 · h 29
- V. Anisimov2 profiles49 · h 45
- Institute for Nuclear ResearchRU1.1k papers
- Centre National de la Recherche ScientifiqueFR887 papers
- Lomonosov Moscow State UniversityRU875 papers
- P.N. Lebedev Physical Institute of the Russian Academy of SciencesRU859 papers
- Steklov Mathematical InstituteRU853 papers
- Moscow Institute of Physics and TechnologyRU653 papers
- Institute of AstronomyRU572 papers
- Space Research InstituteRU558 papers
- Landau Institute for Theoretical PhysicsRU539 papers
- Special Astrophysical ObservatoryRU490 papers
- Ioffe InstituteRU432 papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR376 papers
509 papers · 1 filter
Ba Isotope Ratio in CEMP-s and CEMP-rs Stars as a Signature of s-Process and i-Process
Tatyana Sitnova, Lyudmila Mashonkina
We present a spectroscopic analysis of three carbon-enhanced metal-poor (CEMP) stars of type CEMP-s and CEMP-rs and determine their non-local thermodynamic equilibrium (NLTE) abund…
Time variations of the mean magnetic flux in active regions of different magneto-morphological classes
Anastasiya Zhukova, Valentina Abramenko
Using a recently suggested magneto-morphological classification (MMC, Abramenko, 2021, MNRAS Vol 507) of solar active regions (ARs), we explored 3048 ARs, observed from12 May 1996…
Looking for Signs of Unresolved Binarity in the Continuum of LAMOST Stellar Spectra
Mikhail Prokhorov, Kefeng Tan, Nikolay Samus +10
We describe an attempt to derive the binarity rate of samples of 166 A-, F-, G-, and K-type stars from LAMOST DR5 and 1000 randomly selected presumably single stars from Gaia DR3 c…
Unlocking the mystery of Sr synthesis in the early Galaxy through analysis of barium isotopes in very metal-poor stars
T. M. Sitnova, L. Lombardo, L. I. Mashonkina +8
We determine the contributions of the rapid (r) and slow (s) neutron capture processes to the Ba isotope mixture, along with Ba, Eu, and Sr NLTE abundances, in a sample of very met…
Time path of turbulence and multi-fractality of magnetic field in the evolution of an active region
Valentina Abramenko
Magnetograms acquired with the Helioseismic and Magnetic Imager (HMI) on board the Solar Dynamics Observatory (SDO) were used to calculate and analyze time variations of turbulence…
Effects of angular scattering and H+p, H+H collisions on the properties of interstellar atoms in the heliosphere
A. V. Titova, V. V. Izmodenov, S. D. Korolkov
Interstellar hydrogen atoms (H atoms) penetrate into the heliosphere through the region of the solar wind interaction with the interstellar plasma due to their large mean free path…
Long-period double-lined eclipsing binaries: the system V454 Aur with the secondary eclipse caused by the occultation of the hotter component
Kniazev Alexei, Malkov Oleg, Gorda Stanislav +2
We present the results of our study of the long-period eclipsing binary star \Aur. The results are based on spectroscopic data obtained with the UFES échelle spectrograph and photo…
The global structure of astrospheres: effect of Knudsen number
S. D. Korolkov, V. V. Izmodenov
The interaction between stellar winds and the partially ionized local interstellar medium (LISM) is quite common in astrophysics. However, the main difficulty in describing the neu…
Correlation Functions of Photospheric Magnetic Fields in Solar Active Regions
Valentina Abramenko, Regina Suleymanova
We used magnetograms acquired with the {\it Helioseismic and Magnetic Imager} (HMI) on board the {\it Solar Dynamics Observatory} (SDO) to calculate and analyze spatial correlation…
Magnetic Configuration of Active Regions Associated with GLE Events
Regina A. Suleymanova, Leonty I. Miroshnichenko, Valentina I. Abramenko
Charged particles, generated in solar flares, sometimes can get extremely high energy, above the 500 MeV level, and produce abrupt ground level enhancements (GLEs) on the ground-ba…
Precise Fourier parameters of Cepheid Radial Velocity Curves
V. Hocdé, P. Moskalik, N. A. Gorynya +3
The primary goal of this paper is to derive precise Fourier parameters of the radial velocity (RV) curves for fundamental and first-overtone Galactic Cepheids. For each star, we ca…
Unveiling the white dwarf in J191213.72-441045.1 through ultraviolet observations
Ingrid Pelisoli, Snehalata Sahu, Maxim Lyutikov +7
J191213.72-441045.1 is a binary system composed of a white dwarf and an M-dwarf in a 4.03-hour orbit. It shows emission in radio, optical, and X-ray, all modulated at the white dwa…
A resolved rotating disk wind from a young T Tauri star in the Bok globule CB26
R. Launhardt, Ya. N. Pavlyuchenkov, V. V. Akimkin +9
The disk-outflow connection plays a key role in extracting excess angular momentum from a forming protostar. We have previously reported the discovery of a small molecular outflow…
1D non-LTE corrections for chemical abundance analyses of very metal-poor stars
L. Mashonkina, Yu. Pakhomov, T. Sitnova +3
Detailed chemical abundances of very metal-poor (VMP, [Fe/H] < -2) stars are important for better understanding the First Stars, early star formation and chemical enrichment of gal…
Coagulation-Fragmentation Equilibrium for Charged Dust: Abundance of Submicron Grains Increases Dramatically in Protoplanetary Disks
Vitaly Akimkin, Alexei V. Ivlev, Paola Caselli +2
Dust coagulation in protoplanetary disks is not straightforward and is subject to several slow-down mechanisms, such as bouncing, fragmentation and radial drift to the star. Furthe…
High-precision photometric and high-resolution spectroscopic characterisation of HD 180347
Otto Trust, Lyudmila Mashonkina, Edward Jurua +3
We report the analysis of high-precision space-based photometric and high-resolution spectroscopic observations of HD 180347. The high-quality light curves from the Transiting Exop…
The Pristine Inner Galaxy Survey (PIGS) VII: a discovery of the first inner Galaxy CEMP-r/s star
L. Mashonkina, A. Arentsen, D. S. Aguado +7
Well-studied very metal-poor (VMP, [Fe/H] < -2 ) stars in the inner Galaxy are few in number, and they are of special interest because they are expected to be among the oldest star…
Episodic accretion and mergers during growth of massive protostars
Vardan G. Elbakyan, Sergei Nayakshin, Dominique M. -A. Meyer +1
3D simulations of high mass young stellar object (HMYSO) growth show that their circumstellar discs fragment onto multiple self-gravitating objects. Accretion of these by HMYSO may…
The burst mode of accretion in massive star formation with stellar inertia
D. M. -A. Meyer, E. I. Vorobyov, V. G. Elbakyan +4
The burst mode of accretion in massive star formation is a scenario linking the initial gravitational collapse of parent pre-stellar cores to the properties of their gravitationall…
Swift and XMM-Newton observations of an RS CVn type eclipsing binary SZ Psc: Superflare and coronal properties
Subhajeet Karmakar, Sachindra Naik, Jeewan C. Pandey +1
We present an in-depth study of a large and long duration (1.3 days) X-ray flare observed on an RS CVn type eclipsing binary system SZ Psc using observations from Swift observat…
Using Molecular Lines to Determine Carbon and Nitrogen Abundances in the Atmospheres of Cool Stars
T. Ryabchikova, N. Piskunov, Y. Pakhomov
Simultaneous analysis of the C_2 and CN molecular bands in the 5100-5200 and 7930-8100A spectral regions is a promising alternative for the accurate determination of the carbon (C)…
StaNdaRT: A repository of standardized test models and outputs for supernova radiative transfer
Stéphane Blondin, Sergei Blinnikov, Fionntan P. Callan +26
We present the first results of a comprehensive supernova (SN) radiative-transfer (RT) code-comparison initiative (StaNdaRT), where the emission from the same set of standardized t…
Time-dependent, long-term hydrodynamic simulations of the inner protoplanetary disk II: The importance of stellar rotation
Lukas Gehrig, Daniel Steiner, Eduard Vorobyov +1
The spin evolution of young protostars, surrounded by an accretion disk, still poses problems for observations and theoretical models. In recent studies, the importance of the magn…
A search for period changes of eight short-period Type II Cepheids
Alemiye M. Yacob, Leonid N. Berdnikov, Elena N. Pastukhova +2
In this study, we investigate the period changes of eight short-period Type II Cepheids of the BL Her subtype, i.e., with periods in the 1-4 day range. The diagrams for these…