THE FAR-INFRARED SPECTROSCOPY OF VERY LARGE NEUTRAL POLYCYCLIC AROMATIC HYDROCARBONS

被引：33
作者：
Ricca, Alessandra [1 ]
Bauschlicher, Charles W., Jr. [2 ]
Mattioda, Andrew L. [3 ]
Boersma, Christiaan [3 ]
Allamandola, Louis J. [3 ]
机构：
[1] SETI Inst, Carl Sagan Ctr, Mountain View, CA 94043 USA
[2] NASA, Ames Res Ctr, Space Technol Div, Moffett Field, CA 94035 USA
[3] NASA, Ames Res Ctr, Div Space Sci, Moffett Field, CA 94035 USA
来源：
ASTROPHYSICAL JOURNAL | 2010年 / 709卷 / 01期
关键词：
astrochemistry; infrared: ISM; ISM: molecules; methods: numerical; EMISSION; SPECTRA; PAHS;
D O I：
10.1088/0004-637X/709/1/42
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Here we report the computed far-infrared (FIR) spectra of neutral polycyclic aromatic hydrocarbon (PAH) molecules containing at least 82 carbons up to 130 carbons and with shapes going from compact round and oval-type structures to rectangular and to trapezoidal. The effects of size and shape on the FIR band positions and intensities are discussed. Using FIR data from the NASA Ames PAH IR Spectroscopic Database Version 1.1, we generate synthetic spectra that support the suggestion that the 16.4, 17.4, and 17.8 mu m bands arise from PAHs.
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页码：42 / 52
页数：11
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