Defective carbon onions in interstellar space as the origin of the optical extinction bump at 217.5 nanometers

Satoshi Tomita, Minoru Fujii, Shinji Hayashi

研究成果: Article

16 引用 (Scopus)

抜粋

It is known that carbonaceous dust in interstellar space shows a strong extinction bump at 217.5 nm (4.6 μm-1, 5.7 eV). One of the possible candidates for such carbonaceous interstellar dusts is a new member of the fullerene family called the carbon onion. Recently, we conducted a laboratory experiment to study the optical extinction properties of carbon onions. In order to explain the experimental results, a new dielectric model of the onions, the "defective" spherical onion model, was proposed. Here we show that the defective carbon onions are likely to be one of the origins of the interstellar extinction bump. This report also suggests that carbonaceous interstellar dust particles may be replicated by onions produced in the laboratory.

元の言語English
ページ(範囲)220-224
ページ数5
ジャーナルAstrophysical Journal
609
発行部数1 I
DOI
出版物ステータスPublished - 2004 7 1
外部発表Yes

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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