太阳邻域恒星运动学的一种简化方法

IF 0.8 4区物理与天体物理 Q4 ASTRONOMY & ASTROPHYSICS

Serbian Astronomical Journal Pub Date : 2015-12-01 DOI:10.2298/SAJ150915005S

M. Stojanović

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引用次数: 0

摘要

对于来自太阳附近的许多恒星，它们的星系中心轨道的离心率是用Ninkovic(2011)给出的简化程序计算出来的。偏心率是通过应用一个具有解析给定引力势的模型，从围绕银河系中心的三维轨道计算出的。用这两种方法得到的轨道偏心率(每颗恒星的径向跨度)显示出令人满意的一致性。可以得出这样的结论:对于典型的薄盘恒星，使用这种简化的程序来确定它们绕银河系中心的运动是合理的，因为每颗恒星所需的计算时间要少得多。[南斯拉夫]塞族共和国部长项目;天体和系统的运动学和动力学[ON176011]

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A Simplified Approach to Kinematics of Stars in Solar Neighbourhood

For a number of stars from the Solar neighbourhood the eccentricities of their galactocentric orbits are calculated by using a simplified procedure given by Ninkovic (2011). Eccentricities are calculated from the three-dimensional orbits around the centre of the Milky Way for the same sample of stars, by applying a model with the analytically given gravitational potential as well. The orbital eccentricities (radial span of each star) obtained in these two manners show a satisfactory agreement. It can be concluded that for typical thin-disk stars the use of such a simplified procedure, which requires much less computing time per star, in determining their motion around the Galactic centre is justified. [Projekat Ministarstva nauke Republike Srbije, br. ON176011: Kinematics and dynamics of celestial bodies and systems]

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来源期刊

Serbian Astronomical Journal ASTRONOMY & ASTROPHYSICS-

CiteScore

1.00

自引率

0.00%

发文量

审稿时长

12 weeks

期刊介绍： Serbian Astronomical Journal publishes original observations and researches in all branches of astronomy. The journal publishes: Invited Reviews - review article on some up-to-date topic in astronomy, astrophysics and related fields (written upon invitation only), Original Scientific Papers - article in which are presented previously unpublished author''s own scientific results, Preliminary Reports - original scientific paper, but shorter in length and of preliminary nature, Professional Papers - articles offering experience useful for the improvement of professional practice i.e. article describing methods and techniques, software, presenting observational data, etc. In some cases the journal may publish other contributions, such as In Memoriam notes, Obituaries, Book Reviews, as well as Editorials, Addenda, Errata, Corrigenda, Retraction notes, etc.