论文标题

OSSO XXV:遥远的跨性别共鸣中的大量人群和散射

OSSOS XXV: Large Populations and Scattering-Sticking in the Distant Transneptunian Resonances

论文作者

Crompvoets, B. L., Lawler, S. M., Volk, K., Chen, Y. -T., Gladman, B., Peltier, L., Alexandersen, M., Bannister, M. T., Gwyn, S., Kavelaars, J. J., Petit, J. -M.

论文摘要

在四个特征良好的调查中,已发现77个TNO在遥远的跨夜共振(超过2:1共振,超过47.7 〜AU)中,在遥远的传播共振中进行了库:外部太阳系原始调查(OSSOS)(OSSOS)和三个相似的先前调查。在这里,我们使用OSSOS调查模拟器使用经验参数化模型来测量其内在的轨道分布。由于许多共振只有一个或很少的检测,因此$ j $:$ k $共振对象由$ k $分组,以便为​​模型和现实之间的比较提供更好的依据。我们还使用调查模拟器来限制其绝对种群,发现它们比迄今为止任何已发表的海王星迁移模型所预测的要大得多。我们还发现人口比率与已发布的模型不一致,这对未来的Kuiper Belt Emplacement模型提出了挑战。这些共振之间的估计人群比在很大程度上与散射粘的预测一致,尽管需要进一步发现具有高精度轨道的共振tnos来确定散射粘合是否可以解释整个遥远的谐振人群。

There have been 77 TNOs discovered to be librating in the distant transneptunian resonances (beyond the 2:1 resonance, at semimajor axes greater than 47.7~AU) in four well-characterized surveys: the Outer Solar System Origins Survey (OSSOS) and three similar prior surveys. Here we use the OSSOS Survey Simulator to measure their intrinsic orbital distributions using an empirical parameterized model. Because many of the resonances had only one or very few detections, $j$:$k$ resonant objects were grouped by $k$ in order to have a better basis for comparison between models and reality. We also use the Survey Simulator to constrain their absolute populations, finding that they are much larger than predicted by any published Neptune migration model to date; we also find population ratios that are inconsistent with published models, presenting a challenge for future Kuiper Belt emplacement models. The estimated population ratios between these resonances are largely consistent with scattering-sticking predictions, though further discoveries of resonant TNOs with high-precision orbits will be needed to determine whether scattering-sticking can explain the entire distant resonant population or not.

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