SELF-CONSISTENT ORBITS AND PHYSICAL PROPERTIES FOR EIGHT SINGLE-LINED SPECTROSCOPIC BINARIES

CORC > 紫金山天文台 > 中国科学院紫金山天文台 > 历算和天文参考系研究团组

	SELF-CONSISTENT ORBITS AND PHYSICAL PROPERTIES FOR EIGHT SINGLE-LINED SPECTROSCOPIC BINARIES
	Wang, Xiaoli 1,2; Ren, Shulin1 ; Fu, Yanning1
刊名	ASTRONOMICAL JOURNAL
	2015-10-01
卷号	150 期号:4 页码:110-114
关键词	binaries: spectroscopic methods: data analysis stars: fundamental parameters
英文摘要	For single-lined spectroscopic binaries (SB1s), self-consistent orbits can be determined via a simultaneous fit including both radial velocity data and the Hipparcos Intermediate Astrometric Data. Using the ratio lambda of the semimajor axes of the photocenter to the primary orbits, the present paper develops an iterative fitting method. First, an initial orbit of an SB1 is determined with the assumption that lambda equals 1. On the basis of this orbit, we use a stellar evolutionary model to distribute the total mass and luminosity to the primary and the secondary and update lambda from the component mass and luminosity ratios. Then the orbit is updated using the updated value of lambda, which completes a step of the iterative process. If this process is convergent, the resulting orbit is compatible with the physical properties of component stars. By using this method, the orbital solutions of eight SB1s as well as the physical properties are determined. We find that the component magnitude differences of these systems are very large, except for HIP 7143 and 45333. This suggests that only the secondaries of the two systems can be resolved with the present-day observational techniques, which is in agreement with recent observations.
学科主题	历书天文学
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	INTERMEDIATE ASTROMETRIC DATA ; ACCURATE MASSES ; NORMAL STARS ; TEMPERATURES ; ABUNDANCES ; PARAMETERS ; ELEMENTS ; GIANTS ; RADII
收录类别	SCI
语种	英语
WOS记录号	WOS:000365863900013
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/15197]
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
推荐引用方式 GB/T 7714	Wang, Xiaoli,Ren, Shulin,Fu, Yanning. SELF-CONSISTENT ORBITS AND PHYSICAL PROPERTIES FOR EIGHT SINGLE-LINED SPECTROSCOPIC BINARIES[J]. ASTRONOMICAL JOURNAL,2015,150(4):110-114.
APA	Wang, Xiaoli,Ren, Shulin,&Fu, Yanning.(2015).SELF-CONSISTENT ORBITS AND PHYSICAL PROPERTIES FOR EIGHT SINGLE-LINED SPECTROSCOPIC BINARIES.ASTRONOMICAL JOURNAL,150(4),110-114.
MLA	Wang, Xiaoli,et al."SELF-CONSISTENT ORBITS AND PHYSICAL PROPERTIES FOR EIGHT SINGLE-LINED SPECTROSCOPIC BINARIES".ASTRONOMICAL JOURNAL 150.4(2015):110-114.