由JWST观测到的多恒星系统的混乱死亡和由此产生的行星状星云
The messy death of a multiple star system and the resulting planetary nebula as observed by JWST
摘要：
行星状星云（PNe）是红巨星喷出的外壳，为我们提供了90%的恒星最初质量比太阳大的最后质量损失阶段的历史。在这里，我们分析了詹姆斯韦伯太空望远镜（JWST）早期释放观测（ERO）的PN NGC 3132图像。一个结构化的，扩展的H2晕围绕着一个电离的中央气泡，带有螺旋结构的印记，可能是由一个低质量的伴星在40-60 AU处围绕着中央恒星旋转而形成的。这些图像还揭示了中央恒星的中红外过量，被解释为尘埃盘，表明与另一个更近的伴星相互作用。包括先前已知的A型视伴星在内，NGC 3132 PN的前身至少是一个恒星四重奏。JWST图像使我们能够生成分子晕的照明，电离和流体动力学模型，展示了JWST调查复杂恒星外流的能力。此外，对A型视伴星的新测量使我们能够以极好的精度推导出迄今为止中心恒星祖先的质量值：2.86+/-0.06 Mo。这些结果为未来JWST观测PNE提供了独特的见解，包括碰撞风和双星相互作用的基本天体物理过程，以及超新星和引力波系统的影响。
英文摘要：
Planetary nebulae (PNe), the ejected envelopes of red giant stars, provide us with a history of the last, mass-losing phases of 90 percent of stars initially more massive than the Sun. Here, we analyse James Webb Space Telescope (JWST) Early Release Observation (ERO) images of the PN NGC3132. A structured, extended H2 halo surrounding an ionised central bubble is imprinted with spiral structures, likely shaped by a low-mass companion orbiting the central star at 40-60 AU. The images also reveal a mid-IR excess at the central star interpreted as a dusty disk, indicative of an interaction with another, closer companion. Including the previously known, A-type visual companion, the progenitor of the NGC3132 PN must have been at least a stellar quartet. The JWST images allow us to generate a model of the illumination, ionisation and hydrodynamics of the molecular halo, demonstrating the power of JWST to investigate complex stellar outflows. Further, new measurements of the A-type visual companion allow us to derive the value for the mass of the progenitor of a central star to date with excellent precision: 2.86+/-0.06 Mo. These results serve as path finders for future JWST observations of PNe providing unique insight into fundamental astrophysical processes including colliding winds, and binary star interactions, with implications for supernovae and gravitational wave systems.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
