Astrophysical Bulletin最新文献_第8页

The Interstellar Ti II Distance Scale 星际 Ti II 距离标尺

IF 1.3 4区物理与天体物理

Astrophysical Bulletin Pub Date : 2024-03-02 DOI: 10.1134/S1990341323700219

G. A. Galazutdinov, T. A. Santander, E. Babina, J. Krełowski

引用次数: 0

The Nature of the Emission Spectrum of NGC 7793 P13: Testing the Supercritical Accretion Disk Wind Model NGC 7793 P13发射光谱的性质：超临界吸积盘风模型的检验

IF 1.2 4区物理与天体物理

Astrophysical Bulletin Pub Date : 2023-11-07 DOI: 10.1134/S1990341323700086

A. Kostenkov, A. Vinokurov, K. Atapin, Y. Solovyeva

{"title":"The Nature of the Emission Spectrum of NGC 7793 P13: Testing the Supercritical Accretion Disk Wind Model","authors":"A. Kostenkov, A. Vinokurov, K. Atapin, Y. Solovyeva","doi":"10.1134/S1990341323700086","DOIUrl":"10.1134/S1990341323700086","url":null,"abstract":"The optical spectra of ultraluminous X-ray sources (ULXs) show signs of powerful outflows of matter. These outflows are responsible for the formation of a significant portion of optical and ultraviolet emission in ULXs and can either be stellar winds of the donor stars or optically thick outflows (winds) from the surface of supercritical accretion disks. In the latter scenario the outflows are still expected to be similar to stellar winds of massive stars, which allows one to use the same methods for their study based on a comparison of the observed spectra with those simulated within the framework of non-LTE extended atmosphere models. In this paper, we simulate the optical spectrum of the ultraluminous X-ray pulsar NGC 7793 P13, assuming that its emission part is produced in the wind of the supercritical accretion disk. The estimated mass loss rate is about (1.4times 10^{-5}M_{odot}) yr({}^{-1}). We consider the positive and negative aspects of the model and also discuss the applicability of the concept of supercritical disk winds to NGC 7793 P13 and to another well-known ultraluminous X-ray pulsar, NGC 300 ULX-1.","PeriodicalId":478,"journal":{"name":"Astrophysical Bulletin","volume":"78 3","pages":"395 - 411"},"PeriodicalIF":1.2,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71908737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bipolar Nebula AFGL 2688 in the System of Post-AGB Star V1610 Cyg AGB后恒星V1610 Cyg系统中的双极星云AFGL 2688

IF 1.2 4区物理与天体物理

Astrophysical Bulletin Pub Date : 2023-11-07 DOI: 10.1134/S1990341323700128

V. G. Klochkova, V. E. Panchuk, M. V. Yushkin

引用次数: 0

Photometric Operation Mode of the ASTRONIRCAM Camera ASTRONIRCAM相机的测光操作模式

IF 1.2 4区物理与天体物理

Astrophysical Bulletin Pub Date : 2023-11-07 DOI: 10.1134/S1990341323600163

A. M. Tatarnikov, S. G. Zheltoukhov, N. I. Shatsky, M. A. Burlak, N. A. Maslennikova, A. A. Vakhonin

{"title":"Photometric Operation Mode of the ASTRONIRCAM Camera","authors":"A. M. Tatarnikov, S. G. Zheltoukhov, N. I. Shatsky, M. A. Burlak, N. A. Maslennikova, A. A. Vakhonin","doi":"10.1134/S1990341323600163","DOIUrl":"10.1134/S1990341323600163","url":null,"abstract":"We explain the details of the photometric operation mode of the ASTRONICAM near-IR spectrograph camera mounted on the 2.5-m telescope of the Caucasian Mountain Observatory of the Sternberg Astronomical Institute and describe algorithms used for primary correction and overall pipeline reduction of the acquired data. We present the transformation equations from the 2MASS photometric system to the instrumental (Y)-band system. We derive color transformation coefficients between the instrumental photometric system and standard MKO-NIR (Mauna Kea Observatories Near-Infrared) system for the (J), (H), and (K)-band filters and show that the camera system is close to the standard photometric system. We found that in the case of observations at zenith, average background brightness level, and (1^{primeprime}) seeing the stars with (J=22^{textrm{m}}), (H=20overset{textrm{m}}{.}5), (K=19overset{textrm{m}}{.}5) can be measured with a 3000-s exposure at the signal-to-noise ratio (SNR=3).","PeriodicalId":478,"journal":{"name":"Astrophysical Bulletin","volume":"78 3","pages":"384 - 394"},"PeriodicalIF":1.2,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71908736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Post-AGB Star IRAS 07253–2001: Pulsations, Long-Term Brightness Variability and Spectral Peculiarities AGB后恒星IRAS 07253–2001：脉动、长期亮度变化和光谱特性

IF 1.2 4区物理与天体物理

Astrophysical Bulletin Pub Date : 2023-11-07 DOI: 10.1134/S1990341323700098

N. P. Ikonnikova, M. A. Burlak, A. V. Dodin, A. A. Belinski, A. M. Tatarnikov, N. A. Maslennikova, S. G. Zheltoukhov, K. E. Atapin

{"title":"The Post-AGB Star IRAS 07253–2001: Pulsations, Long-Term Brightness Variability and Spectral Peculiarities","authors":"N. P. Ikonnikova, M. A. Burlak, A. V. Dodin, A. A. Belinski, A. M. Tatarnikov, N. A. Maslennikova, S. G. Zheltoukhov, K. E. Atapin","doi":"10.1134/S1990341323700098","DOIUrl":"10.1134/S1990341323700098","url":null,"abstract":"The observations and comprehensive study of intermediate initial mass stars at the late stages of evolution, and after the asymptotic giant branch (AGB) in particular, are of crucial importance to identify the common properties for the stars of given group and to reveal binaries among them. This work aims to investigate photometric and spectral peculiarities of a poorly studied post-AGB candidate and infrared source IRAS 07253–2001. We present the new multicolor (UBVR_{C}I_{C}YJHK) photometry obtained with the telescopes of the Caucasian mountain observatory and analyse it together with the data acquired by the All Sky Automated Survey for SuperNovae. We report on the detection of multiperiod brightness variability caused by pulsations. A beating of close periods, the main one of 73 days and additional ones of 68 and 70 days, leads to amplitude variations. We have also detected a long-term sine trend in brightness with a period of nearly 1800 days. We suppose it to be orbital and IRAS 07253–2001 to be binary. Based on new low-resolution spectroscopic data obtained with the 2.5-m telescope of the Caucasian mountain observatory in 2020 and 2023 in the (lambda) 3500–7500 wavelength range we have identified spectral lines and compiled a spectral atlas. We have found the [N II], [Ni II] and [S II] forbidden emission lines in the spectrum and discuss their origin. The H(alpha) line has a variable double-peaked emission component. We have derived preliminary estimates of the star’s parameters and detected a variation of radial velocity with a peak-to-peak amplitude of about 30 km s({}^{-1}).","PeriodicalId":478,"journal":{"name":"Astrophysical Bulletin","volume":"78 3","pages":"348 - 363"},"PeriodicalIF":1.2,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71909379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of the Interstellar Matter at the Periphery of the Supershell Surrounding the Cyg OB1 Association in 2.12 Micron Molecular Hydrogen Line 2.12微米分子氢系中Cyg-OB1缔合物超壳层外围的星际物质分析

IF 1.2 4区物理与天体物理

Astrophysical Bulletin Pub Date : 2023-11-07 DOI: 10.1134/S1990341323600072

D. S. Wiebe, T. G. Sitnik, A. S. Rastorguev, T. A. Lozinskaya, A. M. Tatarnikov, A. A. Tatarnikova, A. P. Topchieva, M. V. Zabolotskikh, A. A. Fedoteva, A. A. Tatarnikov

{"title":"Analysis of the Interstellar Matter at the Periphery of the Supershell Surrounding the Cyg OB1 Association in 2.12 Micron Molecular Hydrogen Line","authors":"D. S. Wiebe, T. G. Sitnik, A. S. Rastorguev, T. A. Lozinskaya, A. M. Tatarnikov, A. A. Tatarnikova, A. P. Topchieva, M. V. Zabolotskikh, A. A. Fedoteva, A. A. Tatarnikov","doi":"10.1134/S1990341323600072","DOIUrl":"10.1134/S1990341323600072","url":null,"abstract":"We present observations of the vdB 130 cluster vicinity in a narrow-band filter centered at a (2.12,mu{textrm{m}}) molecular hydrogen line performed at the Caucasus Mountain Observatory of the Lomonosov Moscow State University. The observations reveal an H({}_{2}) emission shell around vdB 130, coincident with a bright infrared shell, visible in all Spitzer bands. Also, numerous H({}_{2}) emission features are detected around infrared Blobs E and W and in the vicinity of a protocluster located to the east of the shell, in a tail of a cometary molecular cloud. H({}_{2}) emission in the vicinity of the vdB 130 cluster is mostly generated in well-developed H II regions and is of fluorescent nature. In the protocluster area, isolated spots are observed, where H({}_{2}) emission is collisionally excited and is probably related to shocks in protostellar outflows. Obtained results are discussed in the context of possible sequential star formation in the vicinity of the vdB 130 cluster, triggered by the interaction of the expanding supershell surrounding the Cyg OB1 association with the molecular cloud and an associated molecular filament.","PeriodicalId":478,"journal":{"name":"Astrophysical Bulletin","volume":"78 3","pages":"333 - 347"},"PeriodicalIF":1.2,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71909378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

RATAN-600 Beam Pattern and Drift Scans of Radio Sources in the Radio Telescope Operation Mode with the West Sector RATAN-600在西区射电望远镜运行模式下的波束图和无线电源漂移扫描

IF 1.2 4区物理与天体物理

Astrophysical Bulletin Pub Date : 2023-11-07 DOI: 10.1134/S1990341323700141

E. K. Majorova, N. N. Bursov, S. A. Trushkin

引用次数: 0

Selected Active Galactic Nuclei from SRG/eROSITA Survey: Optical and IR Observations in 2021 and 2022 with the 2.5-m Telescope at the Caucasian Mountain Observatory of SAI MSU SRG/eROSITA调查中选定的活动星系核：SAI MSU高加索山天文台2.5米望远镜在2021年和2022年的光学和红外观测

IF 1.2 4区物理与天体物理

Astrophysical Bulletin Pub Date : 2023-11-07 DOI: 10.1134/S1990341323700074

A. A. Belinski, A. V. Dodin, S. G. Zheltoukhov, K. A. Postnov, S. A. Potanin, A. M. Tatarnikov, A. N. Tarasenkov, N. I. Shatskii, P. S. Medvedev, G. A. Khorunzhev, A. V. Meshcheryakov, S. Yu. Sazonov, M. R. Gil’fanov

{"title":"Selected Active Galactic Nuclei from SRG/eROSITA Survey: Optical and IR Observations in 2021 and 2022 with the 2.5-m Telescope at the Caucasian Mountain Observatory of SAI MSU","authors":"A. A. Belinski, A. V. Dodin, S. G. Zheltoukhov, K. A. Postnov, S. A. Potanin, A. M. Tatarnikov, A. N. Tarasenkov, N. I. Shatskii, P. S. Medvedev, G. A. Khorunzhev, A. V. Meshcheryakov, S. Yu. Sazonov, M. R. Gil’fanov","doi":"10.1134/S1990341323700074","DOIUrl":"10.1134/S1990341323700074","url":null,"abstract":"We report the results of optical spectroscopy of eight highly variable X-ray sources—AGN candidates from all-sky survey of the eROSITA telescope of the Spectrum-Roentgen-Gamma Space Observatory—performed with the TDS spectrograph (3600–7500 Å, (Rapprox 2000)) attached to the 2.5-m telescope of the Caucasian Mountain Observatory of Sternberg Astronomical Institute of M.V. Lomonosov Moscow State University. We determined the redshifts of the sources from the emission and absorption lines in their spectra. At least five objects can be classified as Seyfert galaxies. We performed pilot infrared photometry of three distant quasars with (z>5) using the ASTRONIRCAM camera and show that on the ‘‘((z-J){-}(J-W1))’’ diagram the distant quasars studied can be confidently distinguished from Galactic red and brown dwarfs. This result proves the possibility of preliminary classification of distant X-ray quasar candidates by their IR colors for further detailed spectroscopic study on large telescopes.","PeriodicalId":478,"journal":{"name":"Astrophysical Bulletin","volume":"78 3","pages":"283 - 292"},"PeriodicalIF":1.2,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71908740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Observations of X-ray Binaries at the Caucasus Mountain Observatory of SAI MSU SAI MSU高加索山天文台的X射线双星观测

IF 1.2 4区物理与天体物理

Astrophysical Bulletin Pub Date : 2023-11-07 DOI: 10.1134/S1990341323700062

A. M. Cherepashchuk

{"title":"Observations of X-ray Binaries at the Caucasus Mountain Observatory of SAI MSU","authors":"A. M. Cherepashchuk","doi":"10.1134/S1990341323700062","DOIUrl":"10.1134/S1990341323700062","url":null,"abstract":"This review presents the results of observations of high-mass and low-mass X-ray binaries carried out at the Caucasus Mountain Observatory of SAI MSU over the past five years. Interpretation of these observations within the framework of complex unconventional models has led to a number of interesting results. In particular, on the basis of the secular evolutionary increase in the orbital period of the microquasar SS 433 that we discovered, we managed to prove that the relativistic object here is a black hole, and the SS 433 system itself evolves as a semi-detached system due to the fact that the distance between its components increases with time, which prevents the formation of a common envelope. In the microquasar Cyg X-3, an anomalous behavior of IR color indices with the phase of the orbital period was detected. Modeling is carried out and estimates of the parameters of this system are given. In low-mass X-ray binaries (X-ray novae), black hole masses are estimated, spectra of advection-dominated disks are constructed, and an observational justification is given for modern results of three-dimensional gas-dynamic calculations for interacting binaries.","PeriodicalId":478,"journal":{"name":"Astrophysical Bulletin","volume":"78 3","pages":"259 - 282"},"PeriodicalIF":1.2,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71909337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rapid Spectral Variability of T Corona Borealis 北半球T型日冕的快速光谱变化

IF 1.2 4区物理与天体物理

Astrophysical Bulletin Pub Date : 2023-11-07 DOI: 10.1134/S1990341323600187

N. A. Maslennikova, A. M. Tatarnikov, A. A. Tatarnikova

引用次数: 0