The Astrometric Animation of Water Masers toward the Mira Variable BX Cam
文献类型：期刊论文
| 作者 | Xu, Shuangjing18,19; Imai, Hiroshi15,16,17; Yun, Youngjoo19; Zhang, Bo18; Rioja, Maria J.12,13,14; Dodson, Richard14; Cho, Se-Hyung11,19; Kim, Jaeheon19; Cui, Lang10 ; Sobolev, Andrey M.9
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2022-12-01 |
| 卷号 | 941期号:2页码:25 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ac9599 |
| 通讯作者 | Xu, Shuangjing(sjxuvlbi@gmail.com) |
| 英文摘要 | We report very long baseline interferometry (VLBI) monitoring observations of the 22 GHz water (H2O) masers around the Mira variable BX Cam, which were carried out as a part of the EAVN Synthesis of Stellar Maser Animations project. Data of 37 epochs in total were obtained from 2018 May to 2021 June with a time interval of 3-4 weeks, spanning approximately three stellar pulsation periods (P = similar to 440 days). In particular, the dual-beam system equipped on the VERA stations was used to measure the kinematics and parallaxes of the H2O maser features. The measured parallax, pi = 1.79 +/- 0.08 mas, is consistent with Gaia EDR3 and previously measured VLBI parallaxes within a 1 sigma error level. The position of the central star was estimated, based on both the Gaia EDR3 data and the center position of the ring-like 43 GHz silicon-monoxide (SiO) maser distribution imaged with the Korean VLBI Network. The three-dimensional H2O maser kinematics indicates that the circumstellar envelope is expanding at a velocity of 13 +/- 4 km s(-1), while there are asymmetries in both the spatial and velocity distributions of the maser features. Furthermore, the H2O maser animation achieved by our dense monitoring program manifests the propagation of shock waves in the circumstellar envelope of BX Cam. |
| WOS关键词 | BASE-LINE ARRAY ; SIO MASERS ; KINEMATICS ; CALIBRATION ; DISTANCE ; STARS |
| 资助项目 | Inter-university collaborative project Japanese VLBI Network (JVN) of NAOJ ; JSPS KAKENHI[JP16H02167] ; CAS Light of West China Program[2021-XBQNXZ-005] ; National Natural Science Foundation of China[U2031212] ; National Natural Science Foundation of China[U1831136] ; Russian Ministry of Science and Higher Education[FEUZ-2020-0030] ; Shanghai Astronomical Observatory, Chinese Academy of Sciences[N2020-06-19-005] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | IOP Publishing Ltd |
| WOS记录号 | WOS:000895911700001 |
| 资助机构 | Inter-university collaborative project Japanese VLBI Network (JVN) of NAOJ ; JSPS KAKENHI ; CAS Light of West China Program ; National Natural Science Foundation of China ; Russian Ministry of Science and Higher Education ; Shanghai Astronomical Observatory, Chinese Academy of Sciences |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/5005]  |
| 专题 | 星系宇宙学研究团组 射电天文研究室_利用南山26米射电望远镜观测数据的文章 |
| 通讯作者 | Xu, Shuangjing |
| 作者单位 | 1.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 2.Ibaraki Univ, Ctr Astron, 2-1-1 Bunkyo, Mito, Ibaraki 3108512, Japan 3.Joint Inst VLBI ERIC, Oude Hoogeveensedijk 4, NL-7991 PD Dwingeloo, Netherlands 4.Sun Yat Sen Univ, Sch Phys & Astron, 2 Daxue Rd, Zhuhai, Guangdong, Peoples R China 5.Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany 6.MIT, Haystack Observ, 99 Millstone Rd, Westford, MA 01886 USA 7.Univ Nigeria, Fac Phys Sci, Dept Phys & Astron, Carver Bldg,1 Univ Rd, Nsukka, Nigeria 8.North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa 9.Ural Fed Univ, 19 Mira St, Ekaterinburg 620002, Russia 10.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Shuangjing,Imai, Hiroshi,Yun, Youngjoo,et al. The Astrometric Animation of Water Masers toward the Mira Variable BX Cam[J]. ASTROPHYSICAL JOURNAL,2022,941(2):25. |
| APA | Xu, Shuangjing.,Imai, Hiroshi.,Yun, Youngjoo.,Zhang, Bo.,Rioja, Maria J..,...&Jung, Taehyun.(2022).The Astrometric Animation of Water Masers toward the Mira Variable BX Cam.ASTROPHYSICAL JOURNAL,941(2),25. |
| MLA | Xu, Shuangjing,et al."The Astrometric Animation of Water Masers toward the Mira Variable BX Cam".ASTROPHYSICAL JOURNAL 941.2(2022):25. |
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