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SELF-CONSISTENT ORBITS AND PHYSICAL PROPERTIES FOR EIGHT SINGLE-LINED SPECTROSCOPIC BINARIES
Wang, Xiaoli1,2; Ren, Shulin1; Fu, Yanning1
2015-10-01
Source PublicationASTRONOMICAL JOURNAL
Volume150Issue:4Pages:110-114
AbstractFor 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.
KeywordBinaries: Spectroscopic Methods: Data Analysis Stars: Fundamental Parameters
Subject Area历书天文学
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/0004-6256/150/4/110
WOS KeywordINTERMEDIATE ASTROMETRIC DATA ; ACCURATE MASSES ; NORMAL STARS ; TEMPERATURES ; ABUNDANCES ; PARAMETERS ; ELEMENTS ; GIANTS ; RADII
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000365863900013
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/15197
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
Recommended Citation
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.
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