High-Dispersion Spectra of NH2 in the Comet C/1999S4 (LINEAR): Excitation Mechanism of the NH2 Molecule
High-Dispersion Spectra of NH2 in the Comet C/1999S4 (LINEAR): Excitation Mechanism of the NH2 Molecule
复制标题
彗星 C/1999S4 中 NH2 的高色散光谱（线性）：NH2 分子的激发机制
DOI：
10.1093/pasj/53.1.l5
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发表时间：
2001
影响因子：
2.3
通讯作者：
S. Masuda
中科院分区：
文献类型：
--
作者：
H. Kawakita;J. Watanabe;D. Kinoshita;S. Abe;R. Furusho;H. Izumiura;K. Yanagisawa;S. Masuda
我们于2000年7月8.75日（UT）对彗星C/1999 S4（LINEAR）进行了高色散光谱观测。从观测光谱中提取了NH_2的NH_2A（0，10，0）-NH_2X（0，0，0）和NH_2A（0，9，0）-NH_2X（0，0，0）谱带，并与模型谱进行了比较。建立了一个NH 2分子的荧光平衡模型，模型中考虑了NH 2分子中NH 2 A（0，v ′，0）-NH 2 X（0，0，0）跃迁和NH 2 X（0，0，0）转动能级间的辐射弛豫.模型中考虑了自旋二重态（F1和F2能级）的转动结构和Swings效应。模拟的光谱与观测的光谱一致
We carried out a high-dispersion spectroscopic observation of the comet C/1999S4 (LINEAR) on 2000 July 8.75 (UT). The NH2 ˜ A(0,10,0)–˜ X(0,0,0) and ˜ A(0,9,0)–˜ X(0,0,0) bands were extracted from the observed spectrum and compared with the modeled spectra. We developed a fluorescence equilibrium model for the NH2, in which ˜ A(0,v � ,0)–˜ X(0,0,0) transitions and the radiative relaxation among the rotational levels in ˜ X(0,0,0) were considered. The rotational structure of the spin doublet (F1 and F2 levels) and the Swings effect were considered in the model. The modeled spectra are consistent with the observed spectra of the ˜