高度离心轨道 AGB 星系-主序星双星化学标志物
太阳与恒星天体物理
2024-07-25 v1
摘要
二进制相互作用被提议用于解释围绕演化恒星（包括渐进巨星段（AGB）星和行星星云）周围看到的各种周星际结构。对 AGB 星周围周星际包裹体的解析观测揭示了螺旋、盘状结构和双极喷流，这些结构的形成可归因于与伴星的相互作用。本文首次运用联合化学与动力学分析方法，揭示了 W Aquilae 这一包含 AGB 星和主序星伴星的双星系统具有高度离心且周期漫长的轨道。我们的研究基于各向异性 SiN 辐射、对 S 型星首次检测到 NS 与 SiC 以及在 CO 辐射中观察到的密度结构。这些特征均被解释为在近地点相互作用期间形成。基于星际化学的方法可对包含 AGB 星的长周期双星系统施加严格的轨道参数约束，该方法同样适用于其他系统。
引用
@article{arxiv.2407.16979,
title = {Chemical tracers of a highly eccentric AGB-main sequence star binary},
author = {T. Danilovich and J. Malfait and M. Van de Sande and M. Montargès and P. Kervella and F. De Ceuster and A. Coenegrachts and T. J. Millar and A. M. S. Richards and L. Decin and C. A. Gottlieb and C. Pinte and E. De Beck and D. J. Price and K. T. Wong and J. Bolte and K. M. Menten and A. Baudry and A. de Koter and S. Etoka and D. Gobrecht and M. Gray and F. Herpin and M. Jeste and E. Lagadec and S. Maes and I. McDonald and L. Marinho and H. S. P. Müller and B. Pimpanuwat and J. M. C. Plane and R. Sahai and S. H. J. Wallström and J. Yates and A. Zijlstra},
journal= {arXiv preprint arXiv:2407.16979},
year = {2024}
}
备注
This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature's AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: https://doi.org/10.1038/s41550-023-02154-y