发布求助
文献互助 智能选刊 最新文献

Astronomy Letters-A Journal of Astronomy and Space Astrophysics最新文献

筛选
英文 中文
Kinematics of the Galaxy from Young Open Star Clusters with Data from the Gaia EDR3 Catalogue 来自Gaia EDR3目录的年轻疏散星团星系运动学数据
IF 0.9 4区 物理与天体物理
Astronomy Letters-A Journal of Astronomy and Space Astrophysics Pub Date : 2022-10-20 DOI: 10.1134/S106377372112001X
V. V. Bobylev, A. T. Bajkova
{"title":"Kinematics of the Galaxy from Young Open Star Clusters with Data from the Gaia EDR3 Catalogue","authors":"V. V. Bobylev,&nbsp;A. T. Bajkova","doi":"10.1134/S106377372112001X","DOIUrl":"10.1134/S106377372112001X","url":null,"abstract":"<p>We have analyzed the kinematics of open star clusters (OSCs) with the proper motions and distances calculated by Hao et al. based on Gaia EDR3 data. The mean line-of-sight velocities are known for a number of clusters from this list. We show that the Galactic rotation parameters determined from samples of OSCs with various ages are in good agreement between themselves. The most interesting results have been obtained from a sample of 967 youngest OSCs with a mean age of 18 Myr. In particular, we have found the following parameters of the angular velocity of Galactic rotation using only their proper motions and distances: <span>(Omega_{0}=28.01pm 0.15)</span> km s<span>({}^{-1})</span> kpc<span>({}^{-1})</span>, <span>(Omega^{prime}_{0}={-}3.674pm 0.040)</span> km s<span>({}^{-1})</span> kpc<span>({}^{-2})</span>, and <span>(Omega^{primeprime}_{0}=0.565pm 0.023)</span> km s<span>({}^{-1})</span> kpc<span>({}^{-3})</span>. The circular rotation velocity of the solar neighborhood around the Galactic center here is <span>(V_{0}=226.9pm 3.1)</span> km s<span>({}^{-1})</span> for the adopted Galactocentric distance of the Sun <span>(R_{0}=8.1pm 0.1)</span> kpc. The parameters of the spiral density wave have been determined from the space velocities of 233 young clusters. The amplitudes of the radial and tangential velocity perturbations produced by the spiral density wave are <span>(f_{R}=9.1pm 0.8)</span> km s<span>({}^{-1})</span> and <span>(f_{theta}=4.6pm 1.2)</span> km s<span>({}^{-1})</span>, respectively; the perturbation wavelengths are <span>(lambda_{R}=3.3pm 0.5)</span> kpc and <span>(lambda_{theta}=2.6pm 0.6)</span> kpc for the the adopted four-armed spiral pattern. The Sun’s phase in the spiral density wave has been found to be <span>((chi_{odot})_{R}approx-180^{circ})</span>.</p>","PeriodicalId":55443,"journal":{"name":"Astronomy Letters-A Journal of Astronomy and Space Astrophysics","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45322684","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
Symbiotic Nature of the Zirconium Star CSS 1102 锆星CSS 1102的共生性质
IF 0.9 4区 物理与天体物理
Astronomy Letters-A Journal of Astronomy and Space Astrophysics Pub Date : 2022-10-20 DOI: 10.1134/S1063773722010054
N. A. Maslennikova, A. A. Tatarnikova, A. M. Tatarnikov, N. P. Ikonnikova, A. V. Dodin
{"title":"Symbiotic Nature of the Zirconium Star CSS 1102","authors":"N. A. Maslennikova,&nbsp;A. A. Tatarnikova,&nbsp;A. M. Tatarnikov,&nbsp;N. P. Ikonnikova,&nbsp;A. V. Dodin","doi":"10.1134/S1063773722010054","DOIUrl":"10.1134/S1063773722010054","url":null,"abstract":"<p>Based on the spectroscopic observations carried out with the 2.5-m telescope at the Caucasus Mountain Observatory (CMO) of the Sternberg Astronomical Institute (SAI), we have established the symbiotic nature of the poorly studied S star CSS 1102. The Balmer jump in emission is observed in the object’s spectrum, and there are lines typical for gaseous nebulae (H I, He I, and [Ne III]). An analysis of the spectral energy distribution has shown that, apart from the nebula and the cool component of spectral type S4.5/2, excess emission in the blue and near-ultraviolet ranges that can be attributed to an accretion disk is noticeable in the spectrum of CSS 1102. The photometric monitoring performed at the 60-cm CMO SAI telescope in the <span>(B)</span> band has revealed rapid variability on a time scale of tens of minutes and with an amplitude of several percent. This is an additional argument for the existence of an accretion disk in the system.</p>","PeriodicalId":55443,"journal":{"name":"Astronomy Letters-A Journal of Astronomy and Space Astrophysics","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45787343","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
Models of Magnetospheric Accretion onto Young Stars in the Absence of Ionization Equilibrium 缺乏电离平衡的年轻恒星磁层吸积模型
IF 0.9 4区 物理与天体物理
Astronomy Letters-A Journal of Astronomy and Space Astrophysics Pub Date : 2022-10-20 DOI: 10.1134/S1063773722010030
D. V. Dmitriev, V. P. Grinin
{"title":"Models of Magnetospheric Accretion onto Young Stars in the Absence of Ionization Equilibrium","authors":"D. V. Dmitriev,&nbsp;V. P. Grinin","doi":"10.1134/S1063773722010030","DOIUrl":"10.1134/S1063773722010030","url":null,"abstract":"<p>The formation of hydrogen emission lines in the magnetospheres of young stars is considered. The magnetosphere is assumed to be formed by a dipole magnetic field whose axis is aligned with the stellar rotation axis. The radiative transfer in spectral lines is considered in the Sobolev approximation with nonlocal radiative coupling. We have taken into account the effect of gas ionization fraction transfer when moving in the magnetosphere, demonstrated its influence on the emission spectrum of the magnetosphere for the first time, and estimated the accretion rate from the <span>(mathrm{Halpha})</span> line. We have shown that at low accretion rates <span>(dot{M}lesssim 10^{-9} {M_{odot}})</span> yr<span>({}^{-1})</span> this effect can exert a significant influence on the model intensities.</p>","PeriodicalId":55443,"journal":{"name":"Astronomy Letters-A Journal of Astronomy and Space Astrophysics","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42231952","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
New Active Galactic Nuclei Detected by the ART-XС and eROSITA Telescopes Onboard the SRG Observatory during an All-Sky X-ray Survey SRG天文台上的ART-XС和eROSITA望远镜在全天X射线探测中探测到的新的活动星系核
IF 0.9 4区 物理与天体物理
Astronomy Letters-A Journal of Astronomy and Space Astrophysics Pub Date : 2022-10-20 DOI: 10.1134/S1063773722020050
G. S. Uskov, I. A. Zaznobin, S. Yu. Sazonov, A. N. Semena, M. R. Gilfanov, R. A. Burenin, M. V. Eselevich, R. A. Krivonos, A. R. Lyapin, P. S. Medvedev, G. A. Khorunzhev, R. A. Sunyaev
{"title":"New Active Galactic Nuclei Detected by the ART-XС and eROSITA Telescopes Onboard the SRG Observatory during an All-Sky X-ray Survey","authors":"G. S. Uskov,&nbsp;I. A. Zaznobin,&nbsp;S. Yu. Sazonov,&nbsp;A. N. Semena,&nbsp;M. R. Gilfanov,&nbsp;R. A. Burenin,&nbsp;M. V. Eselevich,&nbsp;R. A. Krivonos,&nbsp;A. R. Lyapin,&nbsp;P. S. Medvedev,&nbsp;G. A. Khorunzhev,&nbsp;R. A. Sunyaev","doi":"10.1134/S1063773722020050","DOIUrl":"10.1134/S1063773722020050","url":null,"abstract":"<p>We present the results of our identification of 17 X-ray sources detected in the 4–12 keV energy range by the Mikhail Pavlinsky ART-XC telescope during the first year of the SRG all-sky survey. Three of them have been discovered by the ART-XC telescopes, while the remaining ones have already been known previously as X-ray sources, but their nature has remained unknown. We took optical spectra for nine sources located in the northern sky (<span>(delta&gt;{-}20^{circ})</span>) with the 1.6-m AZT-33IK telescope at the Sayan Observatory (the Institute of Solar–Terrestrial Physics, the Siberian Branch of the Russian Academy of Sciences) and the 1.5-m Russian–Turkish telescope at the TÜBITAK National Observatory. For the remaining objects we have analyzed the archival optical spectra taken during the 6dF survey. All of the investigated objects have turned out to be Seyfert galaxies (eight of type 1, seven of type 2, and two of intermediate type 1.8) at redshifts up to <span>(zapprox 0.15)</span>. Based on data from the eROSITA and ART-XC telescopes onboard the SRG observatory, we have obtained X-ray spectra in the energy range 0.2–20 keV for eight sources. A significant intrinsic absorption (<span>(N_{textrm{H}}&gt;10^{22})</span> cm<span>({}^{-2})</span>) has been detected in three of them, with two of them being probably strongly absorbed (<span>(N_{textrm{H}}sim 10^{23})</span> cm<span>({}^{-2})</span>). This paper is a continuation of the series of publications on the optical identification of active galactic nuclei detected by the ART-XC telescope.</p>","PeriodicalId":55443,"journal":{"name":"Astronomy Letters-A Journal of Astronomy and Space Astrophysics","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45179482","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
Type Ibn Supernova SN 2010al: Powerful Mass Loss Half Year Prior to the Explosion Ibn型超新星SN 2010al:爆炸前半年的巨大质量损失
IF 0.9 4区 物理与天体物理
Astronomy Letters-A Journal of Astronomy and Space Astrophysics Pub Date : 2022-10-20 DOI: 10.1134/S1063773722030033
N. N. Chugai
{"title":"Type Ibn Supernova SN 2010al: Powerful Mass Loss Half Year Prior to the Explosion","authors":"N. N. Chugai","doi":"10.1134/S1063773722030033","DOIUrl":"10.1134/S1063773722030033","url":null,"abstract":"<p>Type Ibn supernova SN 2010al is explored to infer parameters of supernova and a circumstellar (CS) shell. The CS interaction model combined with the spectral model of 4600 Å blend suggests the explosion of a WR star with the energy of <span>((1{-}1.5)times 10^{51})</span> erg inside a dense confined CS shell with the mass of <span>({sim}0.1M_{odot})</span> and kinetic energy of <span>({sim}10^{48})</span> erg. The confined CS shell has been formed during the last 0.4 yr prior to the core collapse.</p>","PeriodicalId":55443,"journal":{"name":"Astronomy Letters-A Journal of Astronomy and Space Astrophysics","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45095526","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
Application of the Hori–Deprit Method to the Analysis of the Cosmogonic Evolution of Weakly Perturbed Planetary Systems Hori–Deprit方法在弱摄动行星系统宇宙演化分析中的应用
IF 0.9 4区 物理与天体物理
Astronomy Letters-A Journal of Astronomy and Space Astrophysics Pub Date : 2022-10-20 DOI: 10.1134/S1063773722030045
D. V. Mikryukov, I. A. Balyaev
{"title":"Application of the Hori–Deprit Method to the Analysis of the Cosmogonic Evolution of Weakly Perturbed Planetary Systems","authors":"D. V. Mikryukov,&nbsp;I. A. Balyaev","doi":"10.1134/S1063773722030045","DOIUrl":"10.1134/S1063773722030045","url":null,"abstract":"<p>The dynamical evolution of nonresonant two-planet systems whose structure is nearly circular and coplanar is studied by the Hori–Deprit averaging method. The Poincaré astrocentric coordinates and the complex form of the second system of Poincaré canonical elements are used. The equations are averaged to the second order in planetary masses. The averaged system is integrated using one model two-planet system and the real two-planet system HD 12661 as examples. The constructed solution is compared with the solution of the averaged system of the first approximation and with the solution of the exact equations of motion in rectangular coordinates. In the case of both planetary systems, the second approximation is shown to agree better with the solution of the exact equations. According to the exact equations, the equations of the second approximation, and the equations of the first approximation, the oscillation period of the eccentricities in the HD 12661 system is 26 175, 26 309, and 26 391 years, respectively.</p>","PeriodicalId":55443,"journal":{"name":"Astronomy Letters-A Journal of Astronomy and Space Astrophysics","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47006027","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
Estimation of the Parameters of the Spiral Pattern in the Galaxy Based on a Sample of Classical Cepheids 基于经典造父变星样本的星系螺旋模式参数估计
IF 0.9 4区 物理与天体物理
Astronomy Letters-A Journal of Astronomy and Space Astrophysics Pub Date : 2022-10-20 DOI: 10.1134/S1063773722010017
V. V. Bobylev
{"title":"Estimation of the Parameters of the Spiral Pattern in the Galaxy Based on a Sample of Classical Cepheids","authors":"V. V. Bobylev","doi":"10.1134/S1063773722010017","DOIUrl":"10.1134/S1063773722010017","url":null,"abstract":"<p>We consider a sample of Galactic classical Cepheids with highly accurate estimates of their distances taken from Skowron et al., where they were determined based on the period–luminosity relation. We have refined the geometric characteristics of two spiral arm segments—the Carina–Sagittarius and Outer ones. For this purpose, we have selected 269 Cepheids belonging to the Carina–Sagittarius arm with ages in the range 80–120 Myr. From them we have estimated the pitch angle of the spiral pattern <span>(i={-}11.9^{circ}pm 0.2^{circ})</span> and the position of this arm <span>(a_{0}=7.32pm 0.05)</span> kpc for the adopted <span>(R_{0}=8.1pm 0.1)</span> kpc. In the Outer arm we have selected 343 Cepheids with ages in the range 120–300 Myr. From them we have found <span>(i={-}11.5^{circ}pm 0.5^{circ})</span> and <span>(a_{0}=12.89pm 0.06)</span> kpc. Adhering to the model of a grand-design spiral pattern in the Galaxy with one pitch angle for all arms, we can conclude that this angle is close to <span>({-}12^{circ})</span>.</p>","PeriodicalId":55443,"journal":{"name":"Astronomy Letters-A Journal of Astronomy and Space Astrophysics","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43132960","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
SRGz: Building an Optical Cross-Match Model for the X-ray SRG/eROSITA Sources Using the Lockman Hole Data SRGz:利用Lockman孔数据建立x射线SRG/eROSITA光源的光学交叉匹配模型
IF 0.9 4区 物理与天体物理
Astronomy Letters-A Journal of Astronomy and Space Astrophysics Pub Date : 2022-10-20 DOI: 10.1134/S1063773722020013
M. I. Belvedersky, A. V. Meshcheryakov, P. S. Medvedev, M. R. Gilfanov
{"title":"SRGz: Building an Optical Cross-Match Model for the X-ray SRG/eROSITA Sources Using the Lockman Hole Data","authors":"M. I. Belvedersky,&nbsp;A. V. Meshcheryakov,&nbsp;P. S. Medvedev,&nbsp;M. R. Gilfanov","doi":"10.1134/S1063773722020013","DOIUrl":"10.1134/S1063773722020013","url":null,"abstract":"<p>We present a probabilistic model built for the optical cross-match between the SRG/eROSITA X-ray sources and photometric data from the DESI Legacy Imaging Surveys. The model relies both on positional and photometric information on optical objects nearby X-ray sources and allows performing selection with precision and recall <span>({approx}94%)</span> (for <span>(F_{textrm{X,0.5-2}}&gt;10^{-14})</span> erg s<span>({}^{-1})</span> cm<span>({}^{-2})</span>). With this model, we calibrated positional error of the SRG/eROSITA sources detected in the Lockman Hole: <span>(sigma_{textrm{corr}}=0.87sqrt{sigma_{textrm{det}}^{2.53}+1.12^{2}})</span>. The model will become a part of the SRGz system for data analysis of the X-ray data obtained from the all-sky SRG/eROSITA survey.</p>","PeriodicalId":55443,"journal":{"name":"Astronomy Letters-A Journal of Astronomy and Space Astrophysics","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44493126","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
Forced Photometry for Pan-STARRS1 Objects Based on WISE Data 基于WISE数据的Pan-STARRS1物体的强迫测光
IF 0.9 4区 物理与天体物理
Astronomy Letters-A Journal of Astronomy and Space Astrophysics Pub Date : 2022-10-20 DOI: 10.1134/S1063773722030021
R. A. Burenin
{"title":"Forced Photometry for Pan-STARRS1 Objects Based on WISE Data","authors":"R. A. Burenin","doi":"10.1134/S1063773722030021","DOIUrl":"10.1134/S1063773722030021","url":null,"abstract":"<p>We discuss the technique and results of photometric measurements based on data from the WISE infrared survey for all Pan-STARRS1 objects under the assumption that the object coordinates are known (‘‘forced’’ photometry). The photometry has been performed by taking into account a complete point spread function model and a refined background model in the WISE survey. The fluxes or upper limits on the flux in the 3.4 and 4.6 <span>(mu)</span>m bands have been measured for more than three billion optical objects in the northern sky at declinations <span>(delta&gt;{-}30^{circ})</span>. These measurements will be used to identify galaxy clusters, active galactic nuclei, and quasars in the all-sky surveys of the eROSITA and Mikhail Pavlinsky ART-XC telescopes onboard the Spektr–Roentgen–Gamma space observatory.</p>","PeriodicalId":55443,"journal":{"name":"Astronomy Letters-A Journal of Astronomy and Space Astrophysics","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46171132","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
Difference in the Characteristics of Solar Macrospicules at Low and High Latitudes 低纬度和高纬度地区太阳大针状体特征的差异
IF 0.9 4区 物理与天体物理
Astronomy Letters-A Journal of Astronomy and Space Astrophysics Pub Date : 2022-10-20 DOI: 10.1134/S1063773722010029
S. A. Bogachev, I. P. Loboda, A. A. Reva, A. S. Ulyanov, A. S. Kirichenko
{"title":"Difference in the Characteristics of Solar Macrospicules at Low and High Latitudes","authors":"S. A. Bogachev,&nbsp;I. P. Loboda,&nbsp;A. A. Reva,&nbsp;A. S. Ulyanov,&nbsp;A. S. Kirichenko","doi":"10.1134/S1063773722010029","DOIUrl":"10.1134/S1063773722010029","url":null,"abstract":"<p>We have investigated 49 solar macrospicules observed in 2010 at the rising phase of the solar cycle at high (circumpolar) and low (near the solar equator) latitudes. We have found that, within the measurement accuracy, the macrospicule birth rate does not depend on the latitude and is <span>({sim}0.1)</span> deg<span>({}^{-2})</span> h<span>({}^{-1})</span>. Concurrently, we have established that the mean heights of macrospicules near the equator and the poles differ noticeably. After the elimination of projection effects, we have obtained <span>(31.7pm 0.2)</span> thousand km for macrospicules at low latitudes and <span>(39.1pm 0.3)</span> thousand km for high-latitude macrospicules.</p>","PeriodicalId":55443,"journal":{"name":"Astronomy Letters-A Journal of Astronomy and Space Astrophysics","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42211971","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
首页 上一页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信