تقرير
The orbits of the quadruple star system 88 Tau A from PHASES differential astrometry and radial velocity
| العنوان: | The orbits of the quadruple star system 88 Tau A from PHASES differential astrometry and radial velocity |
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| المؤلفون: | Lane, Benjamin F., Muterspaugh, Matthew W., Fekel, Francis C., Williamson, Michael, Browne, Stanley, Konacki, Maciej, Burke, Bernard F., Kulkarni, S. R., Colavita, M. M., Shao, M. |
| سنة النشر: | 2007 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics |
| الوصف: | We have used high precision differential astrometry from the Palomar High-precision Astrometric Search for Exoplanet Systems (PHASES) project and radial velocity measurements covering a time-span of 20 years to determine the orbital parameters of the 88 Tau A system. 88 Tau is a complex hierarchical multiple system comprising a total of six stars; we have studied the brightest 4, consisting of two short-period pairs orbiting each other with an 18-year period. We present the first orbital solution for one of the short-period pairs, and determine the masses of the components and distance to the system to the level of a few percent. In addition, our astrometric measurements allow us to make the first determination of the mutual inclinations of the orbits. We find that the sub-systems are not coplanar. Comment: Corrected Author Ordering; 12 Pages, Accepted for publication in ApJ |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1086/520877 |
| URL الوصول: | http://arxiv.org/abs/0710.2127 |
| رقم الأكسشن: | edsarx.0710.2127 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1086/520877 |
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