THE THREE-DIMENSIONAL ORBIT AND PHYSICAL PARAMETERS OF 47 OPH

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	THE THREE-DIMENSIONAL ORBIT AND PHYSICAL PARAMETERS OF 47 OPH
	Wang, Xiaoli 1,2; Hummel, Christian A.3; Ren, Shulin1 ; Fu, Yanning1
刊名	ASTRONOMICAL JOURNAL
	2015-03-01
卷号	149 期号:3 页码:110
关键词	astrometry binaries: spectroscopic stars: fundamental parameters stars: individual (47 Oph)
英文摘要	Although 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.
学科主题	天文和天体物理
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	PROTOTYPE OPTICAL INTERFEROMETER ; MARK-III INTERFEROMETER ; SPECTROSCOPIC BINARIES ; RADIAL-VELOCITIES ; STARS ; PRECISION
收录类别	SCI
语种	英语
WOS记录号	WOS:000352304000021
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/14871]
专题	紫金山天文台_历算和天文参考系研究团组
作者单位	1.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
推荐引用方式 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.