Direct spectroscopic evidence for ionized polycyclic aromatic hydrocarbons in the interstellar medium

被引：79

作者：

Sloan, GC ^{[1
]}

Hayward, TL

Allamandola, LJ

Bregman, JD

DeVito, B

Hudgins, DM

机构：

[1] Univ Coll, Sch Phys, Australian Def Force Acad, Canberra, ACT 2600, Australia

[2] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA

[3] Cornell Univ, Ctr Radiophys & Space Res, Ithaca, NY 14853 USA

来源：

ASTROPHYSICAL JOURNAL | 1999年 / 513卷 / 01期

关键词：

dust; extinction; infrared : ISM : lines and bands; ISM : molecules;

D O I：

10.1086/311906

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Long-slit 8-13 mu m spectroscopy of the nebula around NGC 1333 SVS 3 reveals spatial variations in the strength and shape of emission features that are probably produced by polycyclic aromatic hydrocarbons (PAHs). Close to SVS 3, the 11.2 mu m feature develops an excess at similar to 10.8-11.0 mu m, and a feature appears at similar to 10 mu m. These features disappear with increasing distance from the central source, and they show striking similarities to recent laboratory data of PAH cations, providing the first identification of emission features arising specifically from ionized PAHs in the interstellar medium.

引用

页码：L65 / L68

页数：4

共 31 条

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