Astrophysical Bulletin

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Study of the non-stationarity of the atmosphere of κ Cas. Ii. Variability of the Hγ, Hβ, and Hα wind-line profiles
Astrophysical Bulletin - Tập 72 - Trang 452-457 - 2017
A. Kh. Rzaev
We study the variability of the Hγ, Hβ, and Hα line profiles in the spectrum of the supergiant κ Cas. The variability pattern proved to be the same for all the lines considered: their profiles are superimposed by blueshifted, central, and redshifted emission. For Hγ the positions of the emissions coincide with the positions of the corresponding emissions for He I λλ 5876, 6678 Å lines, and are equ...... hiện toàn bộ
Ionized Gas in the NGC 3077 Galaxy
Astrophysical Bulletin - - 2020
Д. В. Опарин, Oleg V. Egorov, А. В. Моисеев
Search for possible connections between isolated radio pulsars and supernova remnants
Astrophysical Bulletin - Tập 67 - Trang 160-176 - 2012
E. G. Chmyreva, G. M. Beskin, A. V. Biryukov
We have developed a method of searching for the connections between the isolated radio pulsars and supernova remnants, based on the analysis of their kinematic characteristics. We investigate fairly young (τ ch ≲ 106 yr) radio pulsars with known proper motions and estimated distances (dispersion measures), and supernova remnants located no more than 1–2 kpc away from them. Using a ...... hiện toàn bộ
Database for Studying Edge-on Galaxies
Astrophysical Bulletin - Tập 76 - Trang 218-227 - 2021
D. I. Makarov, A. V. Antipova
Abstract—We present a database created within the project on studying edge-on galaxies. These galaxies provide a unique opportunity to study the three-dimensional distribution of the matter in galaxy disks, which is extremely important for analyzing the influence of internal and external factors on the evolution of galaxies. For the moment, extensive observed material has been accumulated on the k...... hiện toàn bộ
Erratum: “Peculiar Motions of Galaxy Clusters in the Regions of the Corona Borealis, Bootes, Z 5029/A 1424, A1190, A1750/A 1809 Superclusters of Galaxies”
Astrophysical Bulletin - - 2018
Ф. Г. Копылова, А. И. Копылов
Speckle interferometry of nearby multiple stars. V. 2002–2006 positional measurements
Astrophysical Bulletin - Tập 68 - Trang 53-56 - 2013
I. I. Balega, Yu. Yu. Balega, L. T. Gasanova, V. V. Dyachenko, A. F. Maksimov, E. V. Malogolovets, D. A. Rastegaev, Z. U. Shkhagosheva
We present the measurements of positional parameters of 194 nearby binary stars performed at the 6-m BTA telescope of the SAO RAS from 2002 through 2006 applying the speckle interferometric technique. The observations were conducted at central filter wavelengths ranging from 545 to 800 nm using a speckle interferometer equipped with a fast CCD and a three-stage image intensifier. A significant par...... hiện toàn bộ
Studies of Features of Evolution of Highly Magnetized Stars—White Dwarfs. I. Observations
Astrophysical Bulletin - Tập 77 - Trang 301-307 - 2022
V. N. Aitov, G. G. Valyavin, A. F. Valeev, G. Sh. Mitiani, A. S. Moskvitin, E. B. Emelyanov, T. A. Fatkhullin, K. A. Antonyuk, G. A. Galazutdinov, A. R. Zakinyan, S. A. Kunikin
We present the results of observations within the program for the search for new highly magnetized white dwarfs among evolutionary old stars of this class. The program was carried out for two years at the 1-m telescope of the SAO RAS. As a result, new white dwarf candidates of different ages with super-strong (several megagauss, tens, hundreds of megagauss) magnetic fields were discovered. These o...... hiện toàn bộ
Analysis of the properties of clusters of galaxies in the region of the Ursa Major supercluster
Astrophysical Bulletin - Tập 64 - Trang 1-23 - 2009
F. G. Kopylova, A. I. Kopylov
We analyze the properties of the clusters of galaxies in the region of the Ursa Major (UMa) supercluster using observational data from SDSS and 2MASS catalogs. The region studied includes a supercluster (with a galaxy and cluster overdensity of 3 and 15, respectively) and field clusters inside the 150-Mpc diameter surrounding region. The total dynamical mass of 10 clusters of galaxies in UMa is eq...... hiện toàn bộ
Parameters of SU UMa and WZ Sge-Type Dwarf Novae in Quiescent State. I. FL Psc, TY Psc and V455 And
Astrophysical Bulletin - Tập 78 - Trang 25-35 - 2023
A. A. Dudnik, V. V. Shimansky, N. V. Borisov, A. A. Mitrofanova, M. M. Gabdeev
We present the results of model analysis of the optical spectra of SU UMa and WZ Sge-type dwarf novae TY Psc, FL Psc, and V455 And. Spectroscopic observations were carried out at the SAO RAS 6-m BTA telescope in 2013. The selection criterion for the systems under study is their existence in a quiescent state with an optically thin accretion disk and dominance of white dwarf radiation. The fulfillm...... hiện toàn bộ
Influence of Star Formation on Large Scale Structures of Galactic Magnetic Fields
Astrophysical Bulletin - Tập 73 - Trang 425-429 - 2018
E. A. Mikhailov, V. V. Pushkarev
In order to study magnetic field generation in galaxies with active processes such as intensive star formation, supernovae explosions, etc, a model is needed to differentiate between the properties of interstellar medium in different parts of the galactic disk. In this paper we consider galactic dynamo equations with stochastic coefficients where the parameters responsible for dissipation randomly...... hiện toàn bộ
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