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Search for Past Stellar Encounters and the Origin of 3I/ATLAS

  • Authors: Yiyang Guo, Luyao Zhang, Fabo Feng, Zhao-Yu Li, Anton Pomazan, Xiaohu Yang

Yiyang Guo et al 2025 The Astronomical Journal 170 .

  • Provider: AAS Journals

Caption: Figure 1.

Distributions of nominal and median encounter distances ﹩{d}_{{\rm{enc}}}^{}﹩ and encounter speeds ﹩{v}_{{\rm{enc}}}^{}﹩ for encounters with each 95% quantile of ﹩{d}_{{\rm{enc}}}^{}﹩ below 1.5 pc. The left panel represents the nominal values of ﹩{d}_{{\rm{enc}}}^{{\rm{nom}}}﹩ and ﹩{v}_{{\rm{enc}}}^{{\rm{nom}}}﹩. The right panel represents median values of ﹩{d}_{{\rm{enc}}}^{{\rm{med}}}﹩ and ﹩{v}_{{\rm{enc}}}^{{\rm{med}}}﹩. Error bars indicate 5% and 95% quantiles of ﹩{d}_{{\rm{enc}}}^{}﹩ and ﹩{v}_{{\rm{enc}}}^{}﹩ in MC results. The color bar is based on Equation (3) using the median of g.

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