AI 中文总结
研究利用CARMENES光谱仪新技术，通过一年中不同时间的多时期光谱观测，移动DIBs与地球大气谱线相对位置，对41条视线进行分析，结果显示三个DIBs的载体可能是C_60^ +，有助于揭示DIBs起源。
AI 中文摘要
在恒星光谱中发现首批星际弥漫带（DIBs）吸收现象一个多世纪后（Heger等人，1922年），其起源仍大多未知。9300 - 9700埃区域内600多个已知DIBs中有四个可能归因于C_60^ +（电离巴基球），但该区域受地球大气H_2O吸收严重干扰。本文展示了使用CARMENES光谱仪的研究结果，该研究采用新技术，在一年中不同时间进行多时期光谱观测，以移动DIBs和周围地球大气谱线的相对位置，便于分析DIBs。此技术应用于41条不同消光和环境的视线，均有阳性检测结果。结果表明其中三个DIBs的载体可能是C_60^ +。
英文摘要
Over a century after the discovery of the first diffuse interstellar bands (DIBs) in absorption in stellar spectra (Heger et al 1922), their origin is still mostly unknown. The exception are four DIBs (out of 600+ known) in the 9300-9700 Angstrom region, for which a possible ascription to C_60^+ (ionised buckminsterfullerene, shaped liked a football, hence buckyballs) has been made. However, those DIBs are located in a spectral region heavily contaminated by telluric H_2O absorption, hampering their detection and study from the ground. I present the results of a study with the CARMENES spectrograph that uses a novel technique with multi-epoch spectroscopy at different times of the year to shift the relative position of the DIBs and the surrounding telluric lines, hence facilitating the analysis of the DIBs. The technique has been applied to 41 sightlines of diverse extinctions and environments, with positive detections in all of them. Our results are consistent with three of those DIBs having C_60^+ as the carrier.
CommentsTo appear in Highlights of Spanish Astrophysics XIII, Proceedings of the XVII Scientific Meeting of the Spanish Astronomical Society held on 13-17 July 2026, in Tarragona, Spain
