3D/Biela and the Andromedids: Fragmenting versus Sublimating Comets
3D/Biela and the Andromedids: Fragmenting versus Sublimating Comets
复制标题
3D/Biela 和仙女座流星雨：破碎彗星与升华彗星
DOI：
--
复制
发表时间：
2007
期刊：
影响因子：
--
通讯作者：
J. Vaubaillon
中科院分区：
文献类型：
--
作者：
P. Jenniskens;J. Vaubaillon
3D/比耶拉彗星于 1842/1843 年解体，并在 1846 年和 1852 年回归时继续解体。当 1872 年 11 月和 1885 年观测到流星风暴时，人们推测这些流星雨就是那次解体产生的碎片。这可能来自两个来源之一：（1）远日点附近碎片的最初分离或（2）随后碎片的持续崩解。或者，当碎片接近近日点时，流星体可能只是由水蒸气阻力产生的（选项3）。我们通过计算 1703 年至 1866 年回归期间水蒸气拖曳以正常方式喷射的尘埃的动态演化来研究仙女座风暴的来源，假设彗星在每次回归期间都保持类似的活跃状态。此外，我们还模拟了 1842 年 12 月远日点初始破碎事件期间尘埃的各向同性喷射。我们得出的结论是，选项 2 是 1872 年和 1885 年风暴期间遇到的流星体最有可能的来源，但这仅占典型彗星破碎中相对少量的质量损失。
Comet 3D/Biela broke up in 1842/1843 and continued to disintegrate in the returns of 1846 and 1852. When meteor storms were observed in November of 1872 and 1885, it was surmised that those showers were the debris from that breakup. This could have come from one of two sources: (1) the initial separation of fragments near aphelion or (2) the continued disintegration of the fragments afterward. Alternatively, the meteoroids could simply have come from water vapor drag when the fragments approached perihelion (option 3). We investigated the source of the Andromedid storms by calculating the dynamical evolution of dust ejected in a normal manner by water vapor drag in the returns from 1703 to 1866, assuming that the comet would have remained similarly active over each return. In addition, we simulated the isotropic ejection of dust during the initial fragmentation event at aphelion in December of 1842. We conclude that option 2 is the most likely source of meteoroids encountered during the 1872 and 1885 storms, but this accounts for only a relatively small amount of mass lost in a typical comet breakup.