Zobrazeno 1 - 10
of 71
pro vyhledávání: '"Kai-Xing Lu"'
Autor:
Hai-Cheng Feng, Sha-Sha Li, J. M. Bai, H. T. Liu, Kai-Xing Lu, Yu-Xuan Pang, Mouyuan Sun, Jian-Guo Wang, Yang-Wei Zhang, Shuying Zhou
Publikováno v:
The Astrophysical Journal, Vol 976, Iss 2, p 176 (2024)
We present the results of a four-year velocity-resolved reverberation mapping (RM) campaign of the changing-look active galactic nucleus (CL-AGN) NGC 4151 during its outburst phase. By measuring the time lags of the H α , H β , H γ , He i , and He
Externí odkaz:
https://doaj.org/article/2d4a807264df45d98208a26f7ab95063
Autor:
Sha-Sha Li, Hai-Cheng Feng, H. T. Liu, J. M. Bai, Xiang Ji, Yu-Xuan Pang, Cheng Cheng, Kai-Xing Lu, Jian-Guo Wang, Rui Li
Publikováno v:
The Astrophysical Journal, Vol 972, Iss 1, p 105 (2024)
Broad emission lines of active galactic nuclei (AGNs) originate from the broad-line region (BLR), consisting of dense gas clouds in orbit around an accreting supermassive black hole. Understanding the geometry and kinematics of this region is crucial
Externí odkaz:
https://doaj.org/article/35a428c8fa474d039d5c92813fc02c56
Autor:
Sha-Sha Li, Hai-Cheng Feng, H. T. Liu, J. M. Bai, Rui Li, Kai-Xing Lu, Jian-Guo Wang, Ying-Ke Huang, Zhi-Xiang Zhang
Changing-look active galactic nucleus NGC~4151, which has attracted a lot of attention, is undergoing the second dramatic outburst stage in its evolutionary history. To investigate the geometry and kinematics of the broad-line region (BLR), and measu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8080b27c328f3af3be0e556bbb6a8234
http://arxiv.org/abs/2208.02966
http://arxiv.org/abs/2208.02966
Autor:
Jian-Guo Wang, Jin-Ming Bai, Ying-He Zhao, Xiao-Bo Dong, Kai-Xing Lu, Chuan-Jun Wang, Ju-Jia Zhang, Yu-Xin Xin
Publikováno v:
Research in Astronomy and Astrophysics. 23:035014
The Lijiang 2.4 m Telescope (LJT) is one of the most important telescopes for general astronomical observations in China. Yunnan Faint Object Spectrograph and Camera (YFOSC) is a widely used instrument mounted on the LJT, which occupies for ∼80% of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e80cc8140dd7300981a35cabc13a6fda
https://doi.org/10.1088/1674-4527/acb9d9
https://doi.org/10.1088/1674-4527/acb9d9
Autor:
Zhi-Xiang Zhang, Ling-Lin Zheng, Wei-Min Gu, Mouyuan Sun, Tuan Yi, Jian-Rong Shi, Song Wang, Zhong-Rui Bai, Hao-Tong Zhang, Wen-Yuan Cui, Junfeng Wang, Jianfeng Wu, Xiang-Dong Li, Yong Shao, Kai-Xing Lu, Yu Bai, Chunqian Li, Jin-Bo Fu, Jifeng Liu
We present LAMOST~J041920.07+072545.4 (hereafter J0419), a close binary consisting of a bloated extremely low mass pre-white dwarf (pre-ELM WD) and a compact object with an orbital period of 0.607189~days. The large-amplitude ellipsoidal variations a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4407e8fbc74cf16b6d8c1700fe10e4e3
Autor:
Kai-Xing Lu, Jin-Ming Bai, Jian-Min Wang, Chen Hu, Yan-Rong Li, Pu Du, Ming Xiao, Hai-Cheng Feng, Sha-Sha Li, Jian-Guo Wang, Zhi-Xiang Zhang, Ying-Ke Huang
NGC 5548 is one of the active galactic nuclei (AGN) selected for our long-term spectroscopic monitoring with the Lijiang 2.4~m telescope, aiming at investigating the origin and evolution of the broad-line regions (BLRs), accurately measuring the mass
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3704f9378ea3df5a53083594e0a813fa
Autor:
Yuming Fu, Xue-Bing Wu, Linhua Jiang, Yanxia Zhang, Zhi-Ying Huo, Y. L. Ai, Qian Yang, Qinchun Ma, Xiaotong Feng, Ravi Joshi, Wei Jeat Hon, Christian Wolf, Jiang-Tao Li, Jun-Jie Jin, Su Yao, Yuxuan Pang, Jian-Guo Wang, Kai-Xing Lu, Chuan-Jun Wang, Jie Zheng, Liang Xu, Xiao-Guang Yu, Bao-Li Lun, Pei Zuo
Quasars behind the Galactic plane (GPQs) are important astrometric references and valuable probes of Galactic gas, yet the search for GPQs is difficult due to severe extinction and source crowding in the Galactic plane. In this paper, we present a sa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a14c9aefe4c85ced54131fe23c2408cc
Autor:
Takeo Minezaki, Ming Xiao, Jesús Aceituno, Wei-Jian Guo, Dong-Wei Bao, Chen Hu, Zi-Xu Yang, Jin-Ming Bai, Hezhen Liu, Yan-Rong Li, Luis C. Ho, Bo-Wei Jiang, Sen Yang, Mitsuru Kokubo, Jian-Min Wang, Yi Chen, Yu-Yang Songsheng, Wei-Hao Bian, Zhe Yu, Bin Luo, Zhi-Xiang Zhang, Pu Du, Sha-Sha Li, Keith Horne, Kai-Xing Lu
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
instname
We report the results of a multiyear spectroscopic and photometric monitoring campaign of two luminous quasars, PG 0923+201 and PG 1001+291, both located at the high-luminosity end of the broad-line region (BLR) size-luminosity relation with optical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::890344c5294899b80ce7265aaaa0ed07
http://arxiv.org/abs/2106.05655
http://arxiv.org/abs/2106.05655
Publikováno v:
Research in Astronomy and Astrophysics. 22:075001
In order to study the physical properties of the γ-ray emitting narrow-line Seyfert 1 (NLS1) galaxy population, photometric and spectral observations of the γ-ray emitting NLS1 PMN J0948+0022 were made with the Lijiang 2.4 m optical telescope of Yu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7de8fb227b4671f8a19fd3feb9d7d910
https://doi.org/10.1088/1674-4527/ac684e
https://doi.org/10.1088/1674-4527/ac684e
Autor:
Ying-Ke Huang, Xu Ding, Zhi-Xiang Zhang, Kai-Xing Lu, An-Bing Ren, Hai-Cheng Feng, Yu-Xin Xin, Jin-Ming Bai, Liang Xu, Xiao-Guang Yu
Observing a telluric standard star for correcting the telluric absorption lines of spectrum will take a significant amount of precious telescope time, especially in the long-term spectral monitoring project. Beyond that, it's difficult to select a su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::54f62c64333009ba149eaf262628f6d3
http://arxiv.org/abs/2103.08136
http://arxiv.org/abs/2103.08136