论文标题
各种尺寸的牛taurid族体的物理特性
Physical properties of Taurid meteoroids of various sizes
论文作者
论文摘要
牛角综合体的起源仍在争论中。除了彗星2p/encke外，还建议各种小行星是复合物的成员，因此可能是牛乳子族的母体。牛陶麦克体的物理特性的研究可以对其来源提供约束。我们使用了16个牛角火球的明确定义的轨道样品，并具有详细的辐射光曲线。样品代表了从8克至650 kg的初始质量的酿酒素（直径1-70厘米）。半经验碎片模型用于研究其大气碎片化并得出灭气体内的强度分布。发现小的流星体比大型酿酒剂强。当考虑整体牛角物质时，大多数的强度低于0.01 MPa，密度小于1000 kg/m3。低强度材料的存在主要是大物体（> 10厘米）。如果在较小的身体中遇到，它仅形成一个小部分。牛仔物中也存在更强的材料，最高为0.3 MPa，但较稀有的材料越稀有。强大的物质形成大物体中的小夹杂物或作为小（CM大小）单独的物体而存在。这些特性强烈暗示牛arid的彗星起源。
The origin of the Taurid complex is still debated. In addition to comet 2P/Encke, various asteroids were proposed to be members of the complex and thus possible parent bodies of Taurid meteoroids. Studies of physical properties of Taurid meteoroids can provide constrains on their source. We used a well defined orbital sample of 16 Taurid fireballs with detailed radiometric light curves. The sample represented meteoroids of initial masses from 8 grams to 650 kg (diameters 1 - 70 cm). The semi-empirical fragmentation model was used to study their atmospheric fragmentation and derive strength distribution within the meteoroids. It was found that small meteoroids are stronger than large ones. When considering Taurid material as a whole, the majority has a very low strength of less than 0.01 MPa and a density less than 1000 kg/m3. The low strength material exists mostly as large bodies (>10 cm). If encountered in smaller bodies, it forms only a minor part. Stronger materials up to 0.3 MPa exist in Taurids as well, but the stronger material the rarer it is. Strong material forms small inclusions in large bodies or exists as small (cm-sized) separate bodies. These properties strongly suggest cometary origin of Taurids.
