Astrometric mass ratios for three spectroscopic binaries (Research Note)

被引：7
|
作者：
Sahlmann, J. [1 ]
Fekel, F. C. [2 ]
机构：
[1] Univ Geneva, Observ Geneva, CH-1290 Versoix, Switzerland
[2] Tennessee State Univ, Ctr Excellence Informat Syst, Nashville, TN 37209 USA
来源：
ASTRONOMY & ASTROPHYSICS | 2013年 / 556卷
基金：
瑞士国家科学基金会;
关键词：
binaries: spectroscopic; stars: low-mass; astrometry; stars: individual: HD140667; stars: individual: HD158222; stars: individual: HD217924; SOLAR-TYPE STARS; EXTRASOLAR PLANETS; ORBITS; MULTIPLICITY; COMPANIONS; SEARCH;
D O I：
10.1051/0004-6361/201322078
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The orbits of five single-lined spectroscopic binaries have recently been determined. We now use astrometric measurements that were collected with the Hi p par c os satellite to constrain the systems' mass ratios and secondary masses. The barycentric astrometric orbits of three binary systems, HD140667, HD158222, and HD217924, are fully determined and precise estimates of their mass ratios are obtained. Follow-up of these systems with infrared spectroscopy could yield model-independent dynamical masses for all components.
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页数：4
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