Research in Astronomy and Astrophysics最新文献_第9页

The precursor of GRB211211A: a tide-induced giant quake? GRB211211A的前兆:潮汐引发的大地震?

4区物理与天体物理

Research in Astronomy and Astrophysics Pub Date : 2023-10-30 DOI: 10.1088/1674-4527/ad0825

Enping Zhou, Yong Gao, Yurui Zhou, Xiaoyu Lai, Lijing Shao, Weiyang Wang, Shaolin Xiong, Renxin Xu, Shuxu Yi, Garvin Yim, Han Yue, Zhen Zhang

{"title":"The precursor of GRB211211A: a tide-induced giant quake?","authors":"Enping Zhou, Yong Gao, Yurui Zhou, Xiaoyu Lai, Lijing Shao, Weiyang Wang, Shaolin Xiong, Renxin Xu, Shuxu Yi, Garvin Yim, Han Yue, Zhen Zhang","doi":"10.1088/1674-4527/ad0825","DOIUrl":"https://doi.org/10.1088/1674-4527/ad0825","url":null,"abstract":"Abstract The equilibrium configuration of a solid strange star in the final inspiral phase with another compact object is generally discussed, and the starquake-related issue is revisited, for a special purpose to understand the precursor emission of binary compact star merger events (e.g., that of GRB211211A). As the binary system inspirals inward due to gravitational wave radiation, the ellipticity of the solid strangeon star increases due to the growing tidal field of its compact companion. Elastic energy is hence accumulated during the inspiral stage which might trigger a starquake before the merger when exceeds a critical value. The energy released during such starquakes is calculated and compared to the precursor observation of GRB211211A. The result shows that the energy might be insufficient for binary strangeon-star case unless the entire solid strangeon star shatters, and hence favors a black hole-strangeon star scenario for GRB211211A. The timescale of the precursor as well as the frequency of the observed quasi-periodic-oscillation have also been discussed in the starquake model.","PeriodicalId":54494,"journal":{"name":"Research in Astronomy and Astrophysics","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136104666","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

Basic Survey Scheduling for the Wide Field Survey Telescope (WFST) 广域巡天望远镜基本巡天调度

4区物理与天体物理

Research in Astronomy and Astrophysics Pub Date : 2023-10-27 DOI: 10.1088/1674-4527/ad07cd

Yan-Peng Chen, Ji-an Jiang, Wen-Tao Luo, Xianzhong Zheng, Min Fang, Chao Yang, Hong Yuan-Yu, Zong-Fei Lv

{"title":"Basic Survey Scheduling for the Wide Field Survey Telescope (WFST)","authors":"Yan-Peng Chen, Ji-an Jiang, Wen-Tao Luo, Xianzhong Zheng, Min Fang, Chao Yang, Hong Yuan-Yu, Zong-Fei Lv","doi":"10.1088/1674-4527/ad07cd","DOIUrl":"https://doi.org/10.1088/1674-4527/ad07cd","url":null,"abstract":"Abstract Aiming at improving the survey efficiency of the Wide Field Survey&#xD;Telescope (WFST), we have developed a basic scheduling strategy that takes into&#xD;account the telescope characteristics, observing conditions, and weather conditions&#xD;at the Lenghu site. The sky area is divided into rectangular regions, referred to as&#xD;‘tiles’, with a size of 2.577◦ × 2.634◦&#xD;slightly smaller than the focal area of the mosaic&#xD;CCDs. These tiles are continuously filled in annulars parallel to the equator. The&#xD;brightness of the sky background, which varies with the moon phase and distance&#xD;from the moon, plays a significant role in determining the accessible survey fields.&#xD;Approximately 50 connected tiles are grouped into one block for observation. To opti mize the survey schedule, we perform simulations by taking into account the length of&#xD;exposures, data readout, telescope slewing, and all relevant observing conditions. We&#xD;utilize the Greedy Algorithm for scheduling optimization. Additionally, we propose&#xD;a dedicated dithering pattern to cover the gaps between CCDs and the four corners&#xD;of the mosaic CCD array, which are located outside of the 3-degree field of view.&#xD;This dithering pattern helps to achieve relatively uniform exposure maps for the final&#xD;survey outputs.&#xD;","PeriodicalId":54494,"journal":{"name":"Research in Astronomy and Astrophysics","volume":"10 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136317025","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

Correcting the Contamination of Second-order Spectra: Improving Hα Measurements in Reverberation Mapping Campaigns 修正二阶光谱的污染:改进混响映射运动中的h - α测量

4区物理与天体物理

Research in Astronomy and Astrophysics Pub Date : 2023-10-25 DOI: 10.1088/1674-4527/ad06f2

Wen-Zhe Xi, Kai-Xing Lu, Haicheng Feng, sha-sha li, Jinming Bai, Rui-Lei Zhou, Hongtao Liu, Jian-Guo Wang

{"title":"Correcting the Contamination of Second-order Spectra: Improving Hα Measurements in Reverberation Mapping Campaigns","authors":"Wen-Zhe Xi, Kai-Xing Lu, Haicheng Feng, sha-sha li, Jinming Bai, Rui-Lei Zhou, Hongtao Liu, Jian-Guo Wang","doi":"10.1088/1674-4527/ad06f2","DOIUrl":"https://doi.org/10.1088/1674-4527/ad06f2","url":null,"abstract":"Abstract Long-term spectroscopic monitoring campaigns on active galactic nuclei (AGNs) provide a wealth of information about its interior structure and kinematics. However, a number of the observations suffer from the contamination of second-order spectra (SOS) which will introduce some undesirable uncertainties at red side of spectra. In this paper, we test the effect of SOS and propose a method to correct it in the time domain spectroscopic data using the simultaneously observed comparison stars. Based on the reverberation mapping (RM) data of NGC 5548 in 2019, one of the most intensively monitored AGNs by Lijiang 2.4-meter telescope, we find that scientific object, comparison star, and spectrophotometric standard star can jointly introduce up to ~30% SOS for Grism 14. This irregular but smooth SOS significantly affects the flux density and profile of emission line, while having little effect on the light curve. After applying our method to each spectrum, we find that the SOS can be corrected effectively. The deviation between corrected and intrinsic spectra is ~2%, and the impact of SOS on time lag is very minor. This method makes it possible to obtain the Hα RM measurements from archival data.","PeriodicalId":54494,"journal":{"name":"Research in Astronomy and Astrophysics","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134973761","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

Radiation Spectral Analysis of 3D Dust Molecular Clusters (PAHs) and Peptoids under Ionization and Electric Field in ISM ISM电离和电场作用下三维尘埃分子团(PAHs)和肽类物质的辐射光谱分析

4区物理与天体物理

Research in Astronomy and Astrophysics Pub Date : 2023-10-25 DOI: 10.1088/1674-4527/ad06f4

wu ruiqing, Chun-Hua Zhu, Lü Guoliang, Zhang Xiaojiao, Lu Xizhen, Yu Jinlong, Chen Wujin, Long Mengqiu

{"title":"Radiation Spectral Analysis of 3D Dust Molecular Clusters (PAHs) and Peptoids under Ionization and Electric Field in ISM","authors":"wu ruiqing, Chun-Hua Zhu, Lü Guoliang, Zhang Xiaojiao, Lu Xizhen, Yu Jinlong, Chen Wujin, Long Mengqiu","doi":"10.1088/1674-4527/ad06f4","DOIUrl":"https://doi.org/10.1088/1674-4527/ad06f4","url":null,"abstract":"Abstract The polycyclic aromatic hydrocarbons (PAHs), PANHs, and peptoids dust&#xD;spectral calculations from the interstellar medium (ISM) is important for dust obser vations and theory. Our goal is to calculate the radiation spectrum of spherical PAHs&#xD;dust clusters in a vacuum containing ionized and applied in the presence of electric&#xD;field. And we propose a new simple computational model to calculate the size of three dimensional (3D) spherical dust clusters formed by different initial dust structures. By Vienna Ab−initio Simulation Package (VASP) code, the density functional theory (DFT) with the generalized approximation (GGA) was used to calculate the electron density gradient and obtain the radiation spectrum of dust. When the radius of spherical dust clusters is ∼ [0.009−0.042] µm, the dust radiation spectrum agrees well with the Z=0.02&#xD;mMMP stellar spectrums, and the PAHs radiation spectrum of NGC 4676 at wavelengths of (0-5] µm and (5-10] µm, respectively. In the ionized state, the N-PAH, C10H9N, 2(C4H4)1+, and peptoids 4(CHON), (C8H10N2O5)1+ dust clusters at 3.3 µm, while the 2(C22H21N3O2)1+, 4(CHON) dust clusters at 5.2 µm have obvious peaks. There is a characteristic of part of PAHs and peptoids clusters radiation at the near-infrared wavelength of 2 µm. However, especially after applying an electric field to the dust, the emission spectrum of the dust increase significantly in the radiation wavelength range [3-10]µm. Consequently, the dust clusters of PAHs, PANHs, and peptoids of the radius size ∼[0.009−0.042] µm are likely to exist in the ISM.","PeriodicalId":54494,"journal":{"name":"Research in Astronomy and Astrophysics","volume":"14 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135218362","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

Observation and analysis of VLF nocturnal multimode interference phenomenon based on waveguide mode theory 基于波导模理论的VLF夜间多模干涉现象观察与分析

4区物理与天体物理

Research in Astronomy and Astrophysics Pub Date : 2023-10-25 DOI: 10.1088/1674-4527/ad06f3

Sai Yang, Youtian Niu, Zhe Wang, Xiukun Zhao, Bei Li, Yuling Ding, Gege Zhao, Anqi Zhang

{"title":"Observation and analysis of VLF nocturnal multimode interference phenomenon based on waveguide mode theory","authors":"Sai Yang, Youtian Niu, Zhe Wang, Xiukun Zhao, Bei Li, Yuling Ding, Gege Zhao, Anqi Zhang","doi":"10.1088/1674-4527/ad06f3","DOIUrl":"https://doi.org/10.1088/1674-4527/ad06f3","url":null,"abstract":"Abstract Very low frequency (VLF) signals are propagated between the ground-ionosphere. Multimode interference will cause the phase to show oscillatory changes with distance while propagating at night, leading to abnormalities in the received VLF signal. This study uses the VLF signal received in Qingdao City, Shandong Province, from the Russian Alpha navigation system to explore the multimode interference problem of VLF signal propagation. The characteristics of the effect of multimode interference phenomena on the phase are analyzed according to the variation of the phase of the VLF signal. However, the phase of VLF signals will also be affected by the X-ray and energetic particles that are released during the eruption of solar flares, therefore the two phenomena are studied in this work. It is concluded that the X-ray will not affect the phase of VLF signals at night, but the energetic particles will affect the phase change, and the influence of energetic particles should be excluded in the study of multimode interference phenomena. Using VLF signals for navigation positioning in degraded or unavailable GPS conditions is of great practical significance for very low frequency navigation systems as it can avoid the influence of multimode interference and improve positioning accuracy.","PeriodicalId":54494,"journal":{"name":"Research in Astronomy and Astrophysics","volume":"IA-13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135216620","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

A Rendezvous Mission to the Second Earth Trojan Asteroid 2020 XL₅ with Low-Thrust Multi-Gravity Assists Techniques 使用低推力多重力辅助技术的第二颗地球特洛伊小行星2020 XL5会合任务

4区物理与天体物理

Research in Astronomy and Astrophysics Pub Date : 2023-10-24 DOI: 10.1088/1674-4527/ad0689

Shihai Yang, Bo Xu, Xin Li

{"title":"A Rendezvous Mission to the Second Earth Trojan Asteroid 2020 XL<sub>5</sub> with Low-Thrust Multi-Gravity Assists Techniques","authors":"Shihai Yang, Bo Xu, Xin Li","doi":"10.1088/1674-4527/ad0689","DOIUrl":"https://doi.org/10.1088/1674-4527/ad0689","url":null,"abstract":"Abstract As the second Earth's Trojan asteroid, 2020 XL 5 is worthy of rendezvous and even sample return missions in many aspects. In this paper, a rendezvous mission to Earth's second Trojan asteroid 2020 XL 5 is proposed. However, due to its high inclination and large eccentricity, direct impulsive transfer requires large amounts of fuel consumption. To address this challenge, we explore the benefits of electric propulsion and multi-gravity assists techniques for interplanetary missions. These two techniques are integrated in this mission design. The design of low-thrust gravity-assists (LTGA) trajectory in multi-body dynamics is thoroughly investigated, which is a complex process. A comprehensive framework including three steps is presented here for optimization of LTGA trajectories in multi-body dynamics. The rendezvous mission to 2020 XL 5 is designed with this three-step approach. The most effective transfer sequence among the outcomes involves Earth-Venus-Earth-Venus-2020 XL 5 . Numerical results indicates that the combination of electric propulsion and multi-gravity assists can greatly reduce the fuel consumption, with fuel consumption of 9.03%, making it a highly favorable choice for this rendezvous mission.","PeriodicalId":54494,"journal":{"name":"Research in Astronomy and Astrophysics","volume":"9 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135266377","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 RFI Fast Mitigation Algorithm Based on Block LMS Filter 基于块LMS滤波器的RFI快速缓解算法

4区物理与天体物理

Research in Astronomy and Astrophysics Pub Date : 2023-10-23 DOI: 10.1088/1674-4527/ad05e9

Han Wu, hailong zhang, Zhang Yazhou, Jie WANG, Xu Du, Ting ZHANG, Xinchen YE

引用次数: 0

Relations between the fractional variation of the ionizing continuum and C IV broad absorption lines with different ionization levels 电离连续谱分数变化与不同电离水平下c4宽吸收谱的关系

4区物理与天体物理

Research in Astronomy and Astrophysics Pub Date : 2023-10-20 DOI: 10.1088/1674-4527/ad057c

Ying Ru Lin, Cai-Juan Pan, Wei-Jian Lu

{"title":"Relations between the fractional variation of the ionizing continuum and C IV broad absorption lines with different ionization levels","authors":"Ying Ru Lin, Cai-Juan Pan, Wei-Jian Lu","doi":"10.1088/1674-4527/ad057c","DOIUrl":"https://doi.org/10.1088/1674-4527/ad057c","url":null,"abstract":"Abstract This paper explores the correlation between the fractional variation of the ionizing continuum and C IV BALs with different ionization levels. Our results reveal anti-correlations between fractional variation of the continuum and fractional EW variation of the C IV BALs without Al III BAL/mini-BALs at corresponding velocities, providing evidence for the widespread influence of the ionizing continuum variability on the variation of HiBALs. Conversely, for C IV BALs accompanied by Al III BAL/mini-BALs (LoBAL groups), no significant correction is detected. The absence of such a correlation does not rule out the possibility that variations in these low-ionization lines are caused by ionizing continuum variability, but rather suggests the influence of BAL saturation to some extent. This saturation effect is reflected in the distribution of the fractional EW variation, where the C IV BAL group accompanied by Al III BAL has smaller standard deviation for the best-fitting Gaussian component than the two BAL groups without Al III BAL. However, the distribution of fractional variation of their continuum does not show any significant difference. Besides the saturation influence, another potential explanation for the lack of correlations in the LoBAL groups may be the effects of other variability mechanisms besides the ionization change, such as clouds transiting across the line of sight.","PeriodicalId":54494,"journal":{"name":"Research in Astronomy and Astrophysics","volume":"32 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135567620","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

Quantitative analysis of seeing with height and time at Muztagh-ata site based on ERA5 database 基于ERA5数据库的Muztagh-ata站点高度和时间观测定量分析

4区物理与天体物理

Research in Astronomy and Astrophysics Pub Date : 2023-10-20 DOI: 10.1088/1674-4527/ad057d

Xiaoqi Wu, Cunying Xiao, Ali Esamdin, Jing Xu, Zewei Wang, Luo Xiao

{"title":"Quantitative analysis of seeing with height and time at Muztagh-ata site based on ERA5 database","authors":"Xiaoqi Wu, Cunying Xiao, Ali Esamdin, Jing Xu, Zewei Wang, Luo Xiao","doi":"10.1088/1674-4527/ad057d","DOIUrl":"https://doi.org/10.1088/1674-4527/ad057d","url":null,"abstract":"Abstract Seeing is an important index to evaluate the quality of an astronomical site. To estimate seeing at Muztagh-ata site with height and time quantitatively, European Centre for Medium-Range Weather Forecasts Reanalysis database(ERA5) is used. Seeing calculated from ERA5 is compared consistently with the Differential Image Motion Monitor(DIMM) seeing at the height of 12 m. Results show that seeing decays exponentially with height at Muztagh-ata site. Seeing decays the fastest in autumn in 2021 and most slowly with height in summer. The seeing condition is better in autumn than in summer. The median value of seeing at 12 m is 0.89 arcsec, the maximum value is 1.21 arcsec in August and the minimum is 0.66 arcsec in October. The median value of seeing at 12 m is 0.72 arcsec in the nighttime and 1.08 arcsec in the daytime. Seeing is a combination of annual and about biannual variations with the same phase as temperature and wind speed indicating that seeing variation with time is influenced by temperature and wind speed. The Richardson number Ri is used to analyze the atmosphere stability and the variations of seeing are consistent with Ri between layers. These quantitative results would provide important reference for telescope observation strategy.","PeriodicalId":54494,"journal":{"name":"Research in Astronomy and Astrophysics","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135568039","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

Confirmation of a Sub-Saturn-size transiting exoplanet orbiting a G dwarf: TOI-1194 b and a very low mass companion star:TOI-1251 B from TESS 确认一颗亚土星大小的凌日系外行星绕着一颗G矮星TOI-1194 b和一颗非常低质量的伴星TOI-1251 b运行

4区物理与天体物理

Research in Astronomy and Astrophysics Pub Date : 2023-10-20 DOI: 10.1088/1674-4527/ad057b

Jiaqi Wang, Xiaojun Jiang, Jie Zheng, Hanna Kellermann, Arno Riffeser, Liang Wang, Karen A. Collins, Allyson Bieryla, Lars A Buchhave, Steve B Howell, Eric Girardin, Eric Jensen, Felipe Murgas, Mesut Yilmaz, Sam Quinn, Xing Gao, Ruo-Yu Zhou, Frank Grupp, Huijuan Wang

{"title":"Confirmation of a Sub-Saturn-size transiting exoplanet orbiting a G dwarf: TOI-1194 b and a very low mass companion star:TOI-1251 B from TESS","authors":"Jiaqi Wang, Xiaojun Jiang, Jie Zheng, Hanna Kellermann, Arno Riffeser, Liang Wang, Karen A. Collins, Allyson Bieryla, Lars A Buchhave, Steve B Howell, Eric Girardin, Eric Jensen, Felipe Murgas, Mesut Yilmaz, Sam Quinn, Xing Gao, Ruo-Yu Zhou, Frank Grupp, Huijuan Wang","doi":"10.1088/1674-4527/ad057b","DOIUrl":"https://doi.org/10.1088/1674-4527/ad057b","url":null,"abstract":"Abstract We report the confirmation of a sub-Saturn-size exoplanet, TOI-1194 b with a mass about 0.456 -0.051 +0.055 M J , and a very low mass companion star with a mass of about 96.47±1.5 M J , TOI-1251 B. Exoplanet candidates provided by the Transiting Exoplanet Survey Satellite (TESS) are suitable for further follow-up observations by ground-based telescopes with small and medium apertures. The analysis is performed based on data from several telescopes worldwide, including telescopes in the Sino-German multi-band photometric campaign, which aimed at confirming TESS Objects of Interest (TOIs) using ground-based small-aperture and medium-aperture telescopes, especially for long-period targets. TOI-1194 b is confirmed based on the consistent periodic transits depths from the multiband photometric data. We measure an orbital period of 2.310644±0.000001d, and radius is 0.767 -0.041 +0.045 R J , and amplitude of RV curve is 69.36 -7.31 +7.90 m/s. TOI-1251 B is confirmed based on the multi-band photometric and high-resolution spectroscopic data, whose orbiting period is 5.963054 -0.000001 +0.000002 d, the radius is 0.947 -0.033 +0.035 R J , and amplitude of RV curve is 9848.87 -40.08 +41.86 m/s.","PeriodicalId":54494,"journal":{"name":"Research in Astronomy and Astrophysics","volume":"36 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135568041","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