黑暗能源调查检测到的跨纳普对象的动态分类

论文标题

黑暗能源调查检测到的跨纳普对象的动态分类

Dynamical Classification of Trans-Neptunian Objects Detected by the Dark Energy Survey

论文作者

Khain, T., Becker, J. C., Lin, Hsing Wen, Gerdes, D. W., Adams, F. C., Bernardinelli, P., Bernstein, G. M., Franson, K., Markwardt, L., Hamilton, S., Napier, K., Sako, M., Abbott, T. M. C., Avila, S., Bertin, E., Brooks, D., Buckley-Geer, E., Burke, D. L., Rosell, A. Carnero, Kind, M. Carrasco, Carretero, J., da Costa, L. N., De Vicente, J., Desai, S., Diehl, H. T., Doel, P., Flaugher, B., Frieman, J., Garcia-Bellido, J., Gaztanaga, E., Gruen, D., Gruendl, R. A., Gschwend, J., Gutierrez, G., Hollowood, D. L., Honscheid, K., James, D. J., Kuropatkin, N., Maia, M. A. G., Marshall, J. L., Menanteau, F., Miller, C. J., Miquel, R., Plazas, A. A., Sanchez, E., Scarpine, V., Schubnell, M., Sevilla-Noarbe, I., Smith, M., Sobreira, F., Suchyta, E., Swanson, M. E. C., Tarle, G., Walker, A. R., Wester, W.

论文摘要

外部太阳系包含大量的小体（称为跨核对象或TNO），它们表现出多种类型的动力学行为。该遥远地区的身体分类为动态类别（经历类似轨道进化的亚种群）有助于我们理解太阳系的结构和形成。在这项工作中，我们为外部太阳系提供了更新的动态分类方案。这种方法包括构建一种新的（自动化）方法来识别平均动作共振。我们将此算法应用于黑暗能源调查（DES）观察到的当前TNO的数据集，并为迄今为止检测到的所有DES TNO提供工作分类。我们的分类方案产生了1个内半人马，19个外部半人马，21个散射磁盘对象，47个独立的TNO，48个安全谐振对象，7个共振候选物和97个经典皮带对象。在散射和分离的物体中，我们检测到8个半轴轴大于150 au的TNO。

The outer Solar System contains a large number of small bodies (known as trans-Neptunian objects or TNOs) that exhibit diverse types of dynamical behavior. The classification of bodies in this distant region into dynamical classes -- sub-populations that experience similar orbital evolution -- aids in our understanding of the structure and formation of the Solar System. In this work, we propose an updated dynamical classification scheme for the outer Solar System. This approach includes the construction of a new (automated) method for identifying mean-motion resonances. We apply this algorithm to the current dataset of TNOs observed by the Dark Energy Survey (DES) and present a working classification for all of the DES TNOs detected to date. Our classification scheme yields 1 inner centaur, 19 outer centaurs, 21 scattering disk objects, 47 detached TNOs, 48 securely resonant objects, 7 resonant candidates, and 97 classical belt objects. Among the scattering and detached objects, we detect 8 TNOs with semi-major axes greater than 150 AU.

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