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arXiv 0905.1639astro-ph.EP
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金牛座复合体流星雨和小行星

The Taurid complex meteor showers and asteroids

V. Porubčan, L. Kornoš, I. P. Williams

摘要:

根据国际天文学联盟流星数据库中现有的照片轨道,研究了金牛座流星群的结构。我们已经搜索了潜在的子流或细丝与复杂的使用Southwest-霍金斯D-标准。应用D=0.10的严格限制值,可以从总复合体中分离出15个由三个以上成员组成的子流或细丝。为了证实它们是相互一致的细丝,而不是偶然的聚集在目前的时间,每个成员的轨道演化超过5000年的研究。利用D标准,我们还搜寻了可能与该复合体的气流和细丝有关的近地天体,并研究了潜在成员的轨道演变。发现了7个金牛座丝状体与9个近地天体之间可能存在的关联,其中最有可能的是S Psc(b)-2003 QC 10、N Tau(a)-2004 TG 10、o Ori -2003 UL 3和N Tau(b)-2002 XM 35。一些潜在的母天体可能是休眠的彗星或在复杂内部移动的较大巨石。该复合体中最多的三个纤维可能起源于2 P/Encke。

英文摘要:

The structure of the Taurid meteor complex based on photographic orbits available in the IAU Meteor database is studied. We have searched for potential sub-streams or filaments to be associated with the complex utilizing the Southworth-Hawkins D-criterion. Applying a strict limiting value for D=0.10, fifteen sub-streams or filaments, consisting of more than three members, could be separated out from the general complex. To confirm their mutual consistence as filaments, rather than fortuitous clumping at the present time, the orbital evolution over 5000 years of each member is studied. Utilizing the D-criterion we also searched for NEOs that might be associated with the streams and filaments of the complex and investigated the orbital evolution of potential members. Possible associations between 7 Taurid filaments and 9 NEOs were found. The most probable are for S Psc(b) -- 2003QC10, N Tau(a) -- 2004TG10, o Ori -- 2003UL3 and N Tau(b) -- 2002XM35. Some of the potential parent objects could be either dormant comets or larger boulders moving within the complex. Three of the most populated filaments of the complex may have originated from 2P/Encke.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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