نویسندگان | رضا پژوهش,حسن حامدی نسب,کاظم یوسفی روبیات |
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همایش | پانزدهمین همایش ملی نجوم و اختر فیزیک |
تاریخ برگزاری همایش | ۲۰۲۲-۰۲-۱۶ |
محل برگزاری همایش | بابلسر |
شماره صفحات | ۰-۰ |
نوع ارائه | سخنرانی |
سطح همایش | داخلی |
چکیده مقاله
In this paper, the dynamic stability of 144 triple systems with known orbital elements is investigated. These systems are extracted from the updated Multiple Star Systems Catalog (MSC). Dynamic stability study has been performed using four different criteria. Observational stability parameters as well as their critical values have been calculated using the orbital elements and the mass of the components. The results of this study showed that most triple systems are stable and have a hierarchical structure, but three triple systems (with identities HIP89234, HIP9497 and )HIP42424 according to the existing criteria are dynamically unstable. The instability of these three systems is probably due to unrealistic experimental criteria or observational errors. At the end, the existing criteria are graded according to validity and accuracy.
کلیدواژهها: سیستم های چند تایی