The diffuse interstellar bands - a brief review

11th Pacific Rim Conference on Stellar Astrophysics: Physics and Chemistry of the Late Stages of Stellar Evolution

物理学;天文学

Geballe, T.R.^1

Gemini Observatory, 670 N. A'ohoku Place, Hilo

HI

96720, United States^1

关键词: Absorption features;    Astronomical spectroscopy;    Buckminsterfullerenes;    Carbon bearing;    Diffuse interstellar bands;    Infrared wavelengths;    Interstellar gas;    Near-infrared wavelength;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/728/6/062005/pdf
DOI  :  10.1088/1742-6596/728/6/062005

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

The diffuse interstellar bands, or DIBs, are a large set of absorption features, mostly at optical and near infrared wavelengths, that are found in the spectra of reddened stars and other objects. They arise in interstellar gas and are observed toward numerous objects in our galaxy as well as in other galaxies. Although long thought to be associated with carbon-bearing molecules, none of them had been conclusively identified until last year, when several nearinfrared DIBs were matched to the laboratory spectrum of singly ionized buckminsterfullerene (C60+). This development appears to have begun to solve what is perhaps the greatest unsolved mystery in astronomical spectroscopy. Also recently, new DIBs have been discovered at infrared wavelengths and are the longest wavelength DIBs ever found. I present the general characteristics of the DIBs and their history, emphasizing recent developments.