PMO OpenIR  > 历算和天文参考系研究团组
THE THREE-DIMENSIONAL ORBIT AND PHYSICAL PARAMETERS OF 47 OPH
Wang, Xiaoli1,2; Hummel, Christian A.3; Ren, Shulin1; Fu, Yanning1
2015-03-01
Source PublicationASTRONOMICAL JOURNAL
Volume149Issue:3Pages:110
AbstractAlthough 47 Oph has been shown to be a binary with a period of similar to 27 days using both spectroscopic and interferometric techniques, only a preliminary orbit has been obtained in the previous work due to the shortage of high precision measurements. Since 1997, new spectroscopic and interferometric measurements have been obtained with much higher precision by the spectrograph of the 2.16 m telescope at Xinglong station and the Navy Precision Optical Interferometer, respectively. Combining all of the measurements, a three-dimensional orbit is obtained with high precision in this work. Thus, the component masses are calculated to be 1.50 +/- 0.06 and 1.34 +/- 0.06 M-circle dot, respectively. The orbital parallax is 32.6 +/- 0.6 mas, which is consistent with the Hipparcos parallax. With the known apparent magnitudes and color indices of the components, the derived luminosities are 7.80 +/- 0.36 and 3.41 +/- 0.25 L-circle dot. The estimated radii of the components are 2.06 +/- 0.07 and 1.36 +/- 0.06 R-circle dot. Finally, the evolutionary status of the components are investigated with the help of a stellar evolution model.
KeywordAstrometry Binaries: Spectroscopic Stars: Fundamental Parameters Stars: Individual (47 Oph)
Subject Area天文和天体物理
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/0004-6256/149/3/110
WOS KeywordPROTOTYPE OPTICAL INTERFEROMETER ; MARK-III INTERFEROMETER ; SPECTROSCOPIC BINARIES ; RADIAL-VELOCITIES ; STARS ; PRECISION
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000352304000021
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/14871
Collection历算和天文参考系研究团组
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.European So Observ, D-85748 Garching, Germany
Recommended Citation
GB/T 7714
Wang, Xiaoli,Hummel, Christian A.,Ren, Shulin,et al. THE THREE-DIMENSIONAL ORBIT AND PHYSICAL PARAMETERS OF 47 OPH[J]. ASTRONOMICAL JOURNAL,2015,149(3):110.
APA Wang, Xiaoli,Hummel, Christian A.,Ren, Shulin,&Fu, Yanning.(2015).THE THREE-DIMENSIONAL ORBIT AND PHYSICAL PARAMETERS OF 47 OPH.ASTRONOMICAL JOURNAL,149(3),110.
MLA Wang, Xiaoli,et al."THE THREE-DIMENSIONAL ORBIT AND PHYSICAL PARAMETERS OF 47 OPH".ASTRONOMICAL JOURNAL 149.3(2015):110.
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