(亚)恒星伴体塑造演化恒星的风
太阳与恒星天体物理
2020-10-01 v2 星系天体物理
摘要
双星相互作用主导大质量恒星的演化,但其对低质量和中等质量恒星的作用尚不清晰。从渐近巨星支(AGB)恒星的球对称风演化为非球对称行星状星云(PN)可能源于双星相互作用。我们利用阿塔卡马大型毫米波/亚毫米波阵列(ALMA)观测了一批AGB恒星,发现其风呈现明显的非球对称几何形态,且与行星状星云(PNe)在形态上相似。我们推断相同的物理机制塑造了AGB风与PNe;此外,形态与AGB质量损失率相关。这些特征可由双星相互作用解释。我们提出了一种与AGB恒星和PNe中观测现象一致的AGB形态演化情景。
引用
@article{arxiv.2009.11694,
title = {(Sub)stellar companions shape the winds of evolved stars},
author = {L. Decin and M. Montargès and A. M. S. Richards and C. A. Gottlieb and W. Homan and I. McDonald and I. El Mellah and T. Danilovich and S. H. J. Wallström and A. Zijlstra and A. Baudry and J. Bolte and E. Cannon and E. De Beck and F. De Ceuster and A. de Koter and J. De Ridder and S. Etoka and D. Gobrecht and M. Gray and F. Herpin and M. Jeste and E. Lagadec and P. Kervella and T. Khouri and K. Menten and T. J. Millar and H. S. P. Müller and J. M. C. Plane and R. Sahai and H. Sana and M. Van de Sande and L. B. F. M. Waters and K. T Wong and J. Yates},
journal= {arXiv preprint arXiv:2009.11694},
year = {2020}
}
备注
19 pages main journal, 97 pages Supplementary Information