Monthly Notices of the Royal Astronomical Society最新文献_第10页

Minute-Cadence Observations of the LAMOST Fields with the TMTS: V. Machine Learning Classification of TMTS Catalogues of Periodic Variable Stars 用 TMTS 对 LAMOST 星场进行分钟级观测：V. TMTS周期变星目录的机器学习分类

Monthly Notices of the Royal Astronomical Society Pub Date : 2024-02-04 DOI: 10.1093/mnras/stae404

Fang Guo, Jie Lin, Xiaofeng Wang, Xiaodian Chen, Tanda Li, Liyang Chen, Qiqi Xia, Jun Mo, G. Xi, Jicheng Zhang, Qichun Liu, Xiaojun Jiang, Shengyu Yan, Haowei Peng, Jialian Liu, Wenxiong Li, Weili Lin, D. Xiang, Xiaoran Ma, Yongzhi Cai

{"title":"Minute-Cadence Observations of the LAMOST Fields with the TMTS: V. Machine Learning Classification of TMTS Catalogues of Periodic Variable Stars","authors":"Fang Guo, Jie Lin, Xiaofeng Wang, Xiaodian Chen, Tanda Li, Liyang Chen, Qiqi Xia, Jun Mo, G. Xi, Jicheng Zhang, Qichun Liu, Xiaojun Jiang, Shengyu Yan, Haowei Peng, Jialian Liu, Wenxiong Li, Weili Lin, D. Xiang, Xiaoran Ma, Yongzhi Cai","doi":"10.1093/mnras/stae404","DOIUrl":"https://doi.org/10.1093/mnras/stae404","url":null,"abstract":"\u0000 Periodic variables are always of great scientific interest in astrophysics. Thanks to the rapid advancement of modern large-scale time-domain surveys, the number of reported variable stars has experienced substantial growth for several decades, which significantly deepened our comprehension of stellar structure and binary evolution. The Tsinghua University-Ma Huateng Telescopes for Survey (TMTS) has started to monitor the LAMOST sky areas since 2020, with a cadence of 1 minute. During the period from 2020 to 2022, this survey has resulted in densely sampled light curves for ~30,000 variables of the maximum powers in the Lomb-Scargle periodogram above the 5σ threshold. In this paper, we classified 11,638 variable stars into 6 main types using XGBoost and Random Forest classifiers with accuracies of 98.83% and 98.73%, respectively. Among them, 5301 (45.55%) variables are newly discovered, primarily consisting of δ Scuti stars, demonstrating the capability of TMTS in searching for short-period variables. We cross-matched the catalogue with Gaia’s second Data Release (DR2) and LAMOST’s seventh Data Release (DR7) to obtain important physical parameters of the variables. We identified 5504 δ Scuti stars (including 4876 typical δ Scuti stars and 628 high-amplitude δ Scuti stars), 5899 eclipsing binaries (including EA-, EB- and EW-type) and 226 candidates of RS Canum Venaticorum. Leveraging the metal abundance data provided by LAMOST and the Galactic latitude, we discovered 8 candidates of SX Phe stars within the class of ”δ Scuti stars”. Moreover, with the help of Gaia color-magnitude diagram, we identified 9 ZZ ceti stars.","PeriodicalId":506975,"journal":{"name":"Monthly Notices of the Royal Astronomical Society","volume":"30 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139866945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Minute-Cadence Observations of the LAMOST Fields with the TMTS: V. Machine Learning Classification of TMTS Catalogues of Periodic Variable Stars 用 TMTS 对 LAMOST 星场进行分钟级观测：V. TMTS周期变星目录的机器学习分类

Monthly Notices of the Royal Astronomical Society Pub Date : 2024-02-04 DOI: 10.1093/mnras/stae404

Fang Guo, Jie Lin, Xiaofeng Wang, Xiaodian Chen, Tanda Li, Liyang Chen, Qiqi Xia, Jun Mo, G. Xi, Jicheng Zhang, Qichun Liu, Xiaojun Jiang, Shengyu Yan, Haowei Peng, Jialian Liu, Wenxiong Li, Weili Lin, D. Xiang, Xiaoran Ma, Yongzhi Cai

{"title":"Minute-Cadence Observations of the LAMOST Fields with the TMTS: V. Machine Learning Classification of TMTS Catalogues of Periodic Variable Stars","authors":"Fang Guo, Jie Lin, Xiaofeng Wang, Xiaodian Chen, Tanda Li, Liyang Chen, Qiqi Xia, Jun Mo, G. Xi, Jicheng Zhang, Qichun Liu, Xiaojun Jiang, Shengyu Yan, Haowei Peng, Jialian Liu, Wenxiong Li, Weili Lin, D. Xiang, Xiaoran Ma, Yongzhi Cai","doi":"10.1093/mnras/stae404","DOIUrl":"https://doi.org/10.1093/mnras/stae404","url":null,"abstract":"\u0000 Periodic variables are always of great scientific interest in astrophysics. Thanks to the rapid advancement of modern large-scale time-domain surveys, the number of reported variable stars has experienced substantial growth for several decades, which significantly deepened our comprehension of stellar structure and binary evolution. The Tsinghua University-Ma Huateng Telescopes for Survey (TMTS) has started to monitor the LAMOST sky areas since 2020, with a cadence of 1 minute. During the period from 2020 to 2022, this survey has resulted in densely sampled light curves for ~30,000 variables of the maximum powers in the Lomb-Scargle periodogram above the 5σ threshold. In this paper, we classified 11,638 variable stars into 6 main types using XGBoost and Random Forest classifiers with accuracies of 98.83% and 98.73%, respectively. Among them, 5301 (45.55%) variables are newly discovered, primarily consisting of δ Scuti stars, demonstrating the capability of TMTS in searching for short-period variables. We cross-matched the catalogue with Gaia’s second Data Release (DR2) and LAMOST’s seventh Data Release (DR7) to obtain important physical parameters of the variables. We identified 5504 δ Scuti stars (including 4876 typical δ Scuti stars and 628 high-amplitude δ Scuti stars), 5899 eclipsing binaries (including EA-, EB- and EW-type) and 226 candidates of RS Canum Venaticorum. Leveraging the metal abundance data provided by LAMOST and the Galactic latitude, we discovered 8 candidates of SX Phe stars within the class of ”δ Scuti stars”. Moreover, with the help of Gaia color-magnitude diagram, we identified 9 ZZ ceti stars.","PeriodicalId":506975,"journal":{"name":"Monthly Notices of the Royal Astronomical Society","volume":"2020 17","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139807096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spectral and Timing evolution of GX 340+0 along its Z-track GX 340+0 沿其 Z 轨道的光谱和时间演变

Monthly Notices of the Royal Astronomical Society Pub Date : 2024-02-03 DOI: 10.1093/mnras/stae389

Suchismito Chattopadhyay, Yashpal Bhulla, Ranjeev Misra, Soma Mandal

引用次数: 0

Numerical MHD simulations of solar flares and their associated small-scale structures 太阳耀斑及其相关小尺度结构的 MHD 数值模拟

Monthly Notices of the Royal Astronomical Society Pub Date : 2024-02-03 DOI: 10.1093/mnras/stae375

Mauricio Gonz'alez-Serv'in, J. J. Gonz'alez-Avil'es

{"title":"Numerical MHD simulations of solar flares and their associated small-scale structures","authors":"Mauricio Gonz'alez-Serv'in, J. J. Gonz'alez-Avil'es","doi":"10.1093/mnras/stae375","DOIUrl":"https://doi.org/10.1093/mnras/stae375","url":null,"abstract":"\u0000 Using numerical simulations, we study the formation and dynamics of solar flares in a local region of the solar atmosphere. The magnetohydrodynamics (MHD) equations describe the dynamic evolution of flares, including space-dependent and anomalous magnetic resistivity and highly anisotropic thermal conduction on a 2.5 D slice. We adopt an initial solar atmospheric model in magnetohydrostatic equilibrium, with a magnetic configuration consisting of a vertical current sheet, which helps trigger the magnetic reconnection process. Specifically, we study three scenarios, two with only resistivity and the third with resistivity plus thermal conduction. The main results of the numerical simulations show differences in the global morphology of the flares, including the post-flare loops and the current sheet in three cases. In particular, localized resistivity produces more substructure around the post-flare loops that could be related to the Ritchmyer-Meshkov Instability (RMI). Furthermore, in the scenario of anomalous resistivity, we identify the formation of a plasmoid and a jet at coronal heights. On the other hand, in the scenario with resistivity plus thermal conduction, the post-flare loops are smooth, and no apparent substructures develop. Besides, in the z − component of the current density for the Res+TC case, we observe the development of multiple magnetic islands generated due to the Tearing instability in the non-linear regime.","PeriodicalId":506975,"journal":{"name":"Monthly Notices of the Royal Astronomical Society","volume":"39 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139867827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical MHD simulations of solar flares and their associated small-scale structures 太阳耀斑及其相关小尺度结构的 MHD 数值模拟

Monthly Notices of the Royal Astronomical Society Pub Date : 2024-02-03 DOI: 10.1093/mnras/stae375

Mauricio Gonz'alez-Serv'in, J. J. Gonz'alez-Avil'es

{"title":"Numerical MHD simulations of solar flares and their associated small-scale structures","authors":"Mauricio Gonz'alez-Serv'in, J. J. Gonz'alez-Avil'es","doi":"10.1093/mnras/stae375","DOIUrl":"https://doi.org/10.1093/mnras/stae375","url":null,"abstract":"\u0000 Using numerical simulations, we study the formation and dynamics of solar flares in a local region of the solar atmosphere. The magnetohydrodynamics (MHD) equations describe the dynamic evolution of flares, including space-dependent and anomalous magnetic resistivity and highly anisotropic thermal conduction on a 2.5 D slice. We adopt an initial solar atmospheric model in magnetohydrostatic equilibrium, with a magnetic configuration consisting of a vertical current sheet, which helps trigger the magnetic reconnection process. Specifically, we study three scenarios, two with only resistivity and the third with resistivity plus thermal conduction. The main results of the numerical simulations show differences in the global morphology of the flares, including the post-flare loops and the current sheet in three cases. In particular, localized resistivity produces more substructure around the post-flare loops that could be related to the Ritchmyer-Meshkov Instability (RMI). Furthermore, in the scenario of anomalous resistivity, we identify the formation of a plasmoid and a jet at coronal heights. On the other hand, in the scenario with resistivity plus thermal conduction, the post-flare loops are smooth, and no apparent substructures develop. Besides, in the z − component of the current density for the Res+TC case, we observe the development of multiple magnetic islands generated due to the Tearing instability in the non-linear regime.","PeriodicalId":506975,"journal":{"name":"Monthly Notices of the Royal Astronomical Society","volume":"272 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139807889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spectral and Timing evolution of GX 340+0 along its Z-track GX 340+0 沿其 Z 轨道的光谱和时间演变

Monthly Notices of the Royal Astronomical Society Pub Date : 2024-02-03 DOI: 10.1093/mnras/stae389

Suchismito Chattopadhyay, Yashpal Bhulla, Ranjeev Misra, Soma Mandal

引用次数: 0

SDSS-IV MaNGA: Calibration of astrophysical line-widths in the Hα region using HexPak observations SDSS-IV MaNGA：利用 HexPak 观测校准 Hα 区域的天体物理线宽

Monthly Notices of the Royal Astronomical Society Pub Date : 2024-02-02 DOI: 10.1093/mnras/stae371

Sabyasachi Chattopadhyay, M. Bershady, D. Law, K. Westfall, S. Shetty, C. Machuca, M. Cappellari, K. Rubin, K. Bundy, Samantha Penny

{"title":"SDSS-IV MaNGA: Calibration of astrophysical line-widths in the Hα region using HexPak observations","authors":"Sabyasachi Chattopadhyay, M. Bershady, D. Law, K. Westfall, S. Shetty, C. Machuca, M. Cappellari, K. Rubin, K. Bundy, Samantha Penny","doi":"10.1093/mnras/stae371","DOIUrl":"https://doi.org/10.1093/mnras/stae371","url":null,"abstract":"\u0000 We have re-observed $rm sim$40 low-inclination, star-forming galaxies from the MaNGA survey (σ ∼ 65 km s−1) at ∼6.5 times higher spectral resolution (σ ∼ 10 km s−1) using the HexPak integral field unit on the WIYN 3.5m telescope. The aim of these observations is to calibrate MaNGA’s instrumental resolution and to characterize turbulence in the warm interstellar medium and ionized galactic outflows. Here we report the results for the Hα region observations as they pertain to the calibration of MaNGA’s spectral resolution. Remarkably, we find that the previously-reported MaNGA line-spread-function (LSF) Gaussian width is systematically underestimated by only 1 %. The LSF increase modestly reduces the characteristic dispersion of H ii regions-dominated spectra sampled at 1–2 kpc spatial scales from 23 to 20 km s−1 in our sample, or a 25 % decrease in the random-motion kinetic energy. This commensurately lowers the dispersion zeropoint in the relation between line-width and star-formation rate surface-density in galaxies sampled on the same spatial scale. This modest zero-point shift does not appear to alter the power-law slope in the relation between line-width and star-formation rate surface-density. We also show that adopting a scheme whereby corrected line-widths are computed as the square root of the median of the difference in the squared measured line width and the squared LSF Gaussian avoids biases and allows for lower SNR data to be used reliably.","PeriodicalId":506975,"journal":{"name":"Monthly Notices of the Royal Astronomical Society","volume":"9 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139869515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

SDSS-IV MaNGA: Calibration of astrophysical line-widths in the Hα region using HexPak observations SDSS-IV MaNGA：利用 HexPak 观测校准 Hα 区域的天体物理线宽

Monthly Notices of the Royal Astronomical Society Pub Date : 2024-02-02 DOI: 10.1093/mnras/stae371

Sabyasachi Chattopadhyay, M. Bershady, D. Law, K. Westfall, S. Shetty, C. Machuca, M. Cappellari, K. Rubin, K. Bundy, Samantha Penny

{"title":"SDSS-IV MaNGA: Calibration of astrophysical line-widths in the Hα region using HexPak observations","authors":"Sabyasachi Chattopadhyay, M. Bershady, D. Law, K. Westfall, S. Shetty, C. Machuca, M. Cappellari, K. Rubin, K. Bundy, Samantha Penny","doi":"10.1093/mnras/stae371","DOIUrl":"https://doi.org/10.1093/mnras/stae371","url":null,"abstract":"\u0000 We have re-observed $rm sim$40 low-inclination, star-forming galaxies from the MaNGA survey (σ ∼ 65 km s−1) at ∼6.5 times higher spectral resolution (σ ∼ 10 km s−1) using the HexPak integral field unit on the WIYN 3.5m telescope. The aim of these observations is to calibrate MaNGA’s instrumental resolution and to characterize turbulence in the warm interstellar medium and ionized galactic outflows. Here we report the results for the Hα region observations as they pertain to the calibration of MaNGA’s spectral resolution. Remarkably, we find that the previously-reported MaNGA line-spread-function (LSF) Gaussian width is systematically underestimated by only 1 %. The LSF increase modestly reduces the characteristic dispersion of H ii regions-dominated spectra sampled at 1–2 kpc spatial scales from 23 to 20 km s−1 in our sample, or a 25 % decrease in the random-motion kinetic energy. This commensurately lowers the dispersion zeropoint in the relation between line-width and star-formation rate surface-density in galaxies sampled on the same spatial scale. This modest zero-point shift does not appear to alter the power-law slope in the relation between line-width and star-formation rate surface-density. We also show that adopting a scheme whereby corrected line-widths are computed as the square root of the median of the difference in the squared measured line width and the squared LSF Gaussian avoids biases and allows for lower SNR data to be used reliably.","PeriodicalId":506975,"journal":{"name":"Monthly Notices of the Royal Astronomical Society","volume":"8 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139809470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Discovery and timing of pulsar J2016+3711 in supernova remnant CTB 87 with FAST 利用 FAST 发现超新星残余 CTB 87 中的脉冲星 J2016+3711 并确定其时间

Monthly Notices of the Royal Astronomical Society Pub Date : 2024-02-01 DOI: 10.1093/mnras/stae351

Qian-Cheng Liu, Wen-Juan Zhong, Yang Chen, Pei Wang, Ping Zhou, Y. Yue, Di Li

{"title":"Discovery and timing of pulsar J2016+3711 in supernova remnant CTB 87 with FAST","authors":"Qian-Cheng Liu, Wen-Juan Zhong, Yang Chen, Pei Wang, Ping Zhou, Y. Yue, Di Li","doi":"10.1093/mnras/stae351","DOIUrl":"https://doi.org/10.1093/mnras/stae351","url":null,"abstract":"\u0000 We report on our discovery of the radio pulsar, PSR J2016+3711, in supernova remnant (SNR) CTB 87, with a ∼10.8σ significance of pulses, which confirms the compact nature of the X-ray point source in CTB 87. It is the first pulsar discovered in SNRs using Five-hundred-meter Aperture Spherical radio Telescope (FAST). Its integrated radio pulse profile can be well described by a single component, with a width at 50 % of the peak flux density of about 28.1○ and an effective width of about 32.2○. The mean flux density at 1.25 GHz is estimated to be about 15.5μJy. Combined with the non-detection of the radio pulse at lower frequencies, the radio spectral index of the pulsar is constrained to be ≲ 2.3. We also present the timing solution based on 28 follow-up FAST observations. Our results reveal a period of 50.81 ms, period derivative of 7.2 × 10−14 s s−1, and dispersion measure of 428 pc cm−3. The strength of the equatorial surface magnetic dipole magnetic field is inferred to be about 1.9 × 1012 G. Using the ephemeris obtained from the radio observations, we searched Fermi-LAT data for gamma-ray pulsations but detected no pulsed signal. We also searched for radio pulses with FAST toward the X-ray counterpart of the gamma-ray binary HESS J1832−093 proximate to SNR G22.7−00.2 but found no signal.","PeriodicalId":506975,"journal":{"name":"Monthly Notices of the Royal Astronomical Society","volume":"201 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139827766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Discovery and timing of pulsar J2016+3711 in supernova remnant CTB 87 with FAST 利用 FAST 发现超新星残余 CTB 87 中的脉冲星 J2016+3711 并确定其时间

Monthly Notices of the Royal Astronomical Society Pub Date : 2024-02-01 DOI: 10.1093/mnras/stae351

Qian-Cheng Liu, Wen-Juan Zhong, Yang Chen, Pei Wang, Ping Zhou, Y. Yue, Di Li

{"title":"Discovery and timing of pulsar J2016+3711 in supernova remnant CTB 87 with FAST","authors":"Qian-Cheng Liu, Wen-Juan Zhong, Yang Chen, Pei Wang, Ping Zhou, Y. Yue, Di Li","doi":"10.1093/mnras/stae351","DOIUrl":"https://doi.org/10.1093/mnras/stae351","url":null,"abstract":"\u0000 We report on our discovery of the radio pulsar, PSR J2016+3711, in supernova remnant (SNR) CTB 87, with a ∼10.8σ significance of pulses, which confirms the compact nature of the X-ray point source in CTB 87. It is the first pulsar discovered in SNRs using Five-hundred-meter Aperture Spherical radio Telescope (FAST). Its integrated radio pulse profile can be well described by a single component, with a width at 50 % of the peak flux density of about 28.1○ and an effective width of about 32.2○. The mean flux density at 1.25 GHz is estimated to be about 15.5μJy. Combined with the non-detection of the radio pulse at lower frequencies, the radio spectral index of the pulsar is constrained to be ≲ 2.3. We also present the timing solution based on 28 follow-up FAST observations. Our results reveal a period of 50.81 ms, period derivative of 7.2 × 10−14 s s−1, and dispersion measure of 428 pc cm−3. The strength of the equatorial surface magnetic dipole magnetic field is inferred to be about 1.9 × 1012 G. Using the ephemeris obtained from the radio observations, we searched Fermi-LAT data for gamma-ray pulsations but detected no pulsed signal. We also searched for radio pulses with FAST toward the X-ray counterpart of the gamma-ray binary HESS J1832−093 proximate to SNR G22.7−00.2 but found no signal.","PeriodicalId":506975,"journal":{"name":"Monthly Notices of the Royal Astronomical Society","volume":"99 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139887792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0