AI 中文总结
该研究指出，HST紫外光谱学是约束红超巨星双星系统中高温伴星特性、轨道解与演化状态的关键手段，对理解大质量双星演化及超新星起源具有重要意义。
AI 中文摘要
哈勃空间望远镜（HST）凭借其在紫外波段独特的高光谱分辨率与高灵敏度能力，已推动我们对恒星演化的认知，尤其针对高温大质量恒星。在红超巨星（RSG）领域，它也带来了多项重要发现，例如表征VV Cephei系统中嵌入的高温伴星、探测参宿四的表面物质抛射，以及揭示麦哲伦星云中丰富的RSG+B双星族群。我们证实，如今（及未来十年）我们对HST的需求比以往任何时候都更为迫切：得益于高角分辨率干涉测量与天体测量技术的显著进步，我们首次能够分辨RSG系统中恒星组分的轨道运动。然而，长波段辐射主要由低温RSG主导，因此，利用HST在紫外波段观测此类伴星，是约束高温伴星的特性与速度的唯一途径，为约束RSG系统的轨道解与演化状态补充了关键缺失信息。这类观测对理解大质量双星系统中的相互作用与质量转移，及其与观测到的超新星族群的关联至关重要。
英文摘要
The Hubble Space Telescope (HST) has advanced our knowledge of stellar evolution thanks to its unique high-spectral resolution and high-sensitivity capabilities in the UV region, especially for hot massive stars. Within the field of red supergiants (RSGs), it has led to several major insights as well, such as, for example, characterizing the embedded hot companion in the VV Cephei system, the detection of surface mass ejection from Betelgeuse, and unveiling the rich population of RSG+B binaries in the Magellanic Clouds. We demonstrate that nowadays (and in the decade to come) we need HST more than ever, as for the first time, thanks to the significant advances of high-angular-resolution interferometric and astrometric techniques, we can resolve the orbital motion of stellar components in RSG systems. However, the long wavelengths are dominated by the cool RSGs. Thus, observing such companions in the UV with HST is the only way to constrain the properties and velocity of the hot companions, adding the required missing piece of information for constraining the orbital solution and evolutionary status of RSG systems. Such observations are critical for understanding the interaction and mass transfer in massive binary systems and their connection to the observed population of supernovae.
CommentsWhite paper submitted in response to the STScI call "Building a Roadmap for Hubble science into the 2030s"
