论文标题

牛角复合式吸烟枪:彗星活动的检测

Taurid Complex Smoking Gun: Detection of Cometary Activity

论文作者

Ferrin, Ignacio, Orofino, Vincenzo

论文摘要

使用世俗的光曲线(SLC)形式主义(Ferrín,2010年),我们已经分类了88个牛角络合物(TC)的可能成员。其中51个具有有用的SLC,其中34个(67%)具有彗星活动。 This high percentage of active asteroids gives support to the hypothesis of a catastrophe that took place during the Upper Paleolithic (Clube and Napier, 1984), when a large short-period comet, arriving in the inner Solar System from the Kuiper Belt, experienced, starting from 20 thousand years ago, a series of fragmentations that produced the present 2P/Encke comet, together with a large number of other members of the TC.祖体的碎裂是通过其异质结构(与碎石桩非常相似)促进的,这也解释了不同组成和起源碎片复合物中的当前共存。我们发现(2212)Hephaistos和169p/Neat活跃,TC的成员与自己的子组。该综合体的其他组成部分是流星群,当它们进入陆地气氛时,它们通常会引起流星阵雨,而且很可能也可能在1908年和2013年在Tunguska和Chelyabinsk的陆地大气中爆炸了两个小的小行星。我们今天在TC上看到的是一个非常多样化和许多复杂物体的残余物,其特征是与地球发生碰撞的强烈过去,这可能会继续代表我们星球的危险。

Using the Secular Light Curve (SLC) formalism (Ferrín, 2010), we have catalogued 88 probable members of the Taurid Complex (TC). 51 of them have useful SLCs and 34 of these (67%) exhibit cometary activity. This high percentage of active asteroids gives support to the hypothesis of a catastrophe that took place during the Upper Paleolithic (Clube and Napier, 1984), when a large short-period comet, arriving in the inner Solar System from the Kuiper Belt, experienced, starting from 20 thousand years ago, a series of fragmentations that produced the present 2P/Encke comet, together with a large number of other members of the TC. The fragmentation of the progenitor body was facilitated by its heterogeneous structure (very similar to a rubble pile) and this also explains the current coexistence in the complex of fragments of different composition and origin. We have found that (2212) Hephaistos and 169P/NEAT are active and members of the TC with their own sub-group. Other components of the complex are groups of meteoroids, that often give rise to meteor showers when they enter the terrestrial atmosphere, and very probably also the two small asteroids that in 1908 and 2013 exploded in the terrestrial atmosphere over Tunguska and Chelyabinsk, respectively. What we see today of the TC are the remnants of a very varied and numerous complex of objects, characterized by an intense past of collisions with the Earth which may continue to represent a danger for our planet.

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