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Measuring the distance of VX sagittarii with SiO maser proper motions

文献类型：期刊论文

作者Chen, Xi; Shen, Zhi-Qiang; Xu, Ye
刊名CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
出版日期2007
卷号7期号:4页码:531-538
关键词methods : statistical masers stars : individual (VX Sgr) stars : distances
英文摘要We report on 43 GHz v=1, J=1-0 SiO maser proper motions in the circurnstellar envelope of the M-type semi-regular variable star VX Sgr, observed by Very Long Baseline Array (VLBA) at 3 epochs during 1999 April-May. Applying the statistical parallax analysis to these proper motions, we estimated a distance of VX Sgr of 1.57 +/- 0.27kpc, which is consistent with that based on the proper motions of H2O masers, or on the assumption that VX Sgr belongs to the Sgr OB I association. At this distance, VX Sgr can be classified as a red supergiant. Comparing the statistical parallax method with those of model fitting and annual parallax, we think that the statistical parallax method may be a good way of estimating SiO maser distances at present.
WOS标题词Science & Technology ; Physical Sciences
学科主题星系与宇宙学研究中心
类目[WOS]Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics
关键词[WOS]WATER MASERS ; MILKY-WAY ; OUTFLOW ; STARS ; KINEMATICS ; PHASE ; DUST ; VLBI
收录类别SCI
语种英语
WOS记录号WOS:000249365900009
公开日期2010-11-08
源URL[http://119.78.226.72//handle/331011/12331]  
专题上海天文台_星系宇宙学重点实验室
作者单位1.Chinese Acad Sci, Astron Observ, Shanghai 200030, Peoples R China
2.Natl Taiwan Normal Univ, Dept Earth Sci, Taipei, Taiwan
推荐引用方式
GB/T 7714		 Chen, Xi,Shen, Zhi-Qiang,Xu, Ye. Measuring the distance of VX sagittarii with SiO maser proper motions[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2007,7(4):531-538.
APA Chen, Xi,Shen, Zhi-Qiang,&Xu, Ye.(2007).Measuring the distance of VX sagittarii with SiO maser proper motions.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,7(4),531-538.
MLA Chen, Xi,et al."Measuring the distance of VX sagittarii with SiO maser proper motions".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 7.4(2007):531-538.

入库方式： OAI收割

来源：上海天文台

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