Introducing EMILI: Computer-aided Emission Line Identification
Introducing EMILI: Computer-aided Emission Line Identification
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EMILI 简介：计算机辅助发射线识别
DOI：
10.1086/378321
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
P. V. van Hoof
中科院分区：
文献类型：
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作者：
B. Sharpee;Robert Williams;J. Baldwin;P. V. van Hoof
谱线的识别可能是一个繁琐的过程，需要对大型光谱数据库进行查询，但它确实有助于软件算法确定候选谱线识别的特征。我们在这里介绍用于识别线路的标准和为称为EMILI的线路识别软件包开发的逻辑，该软件包使用v2.04 Atomic line List作为基本线路数据库。EMILI考虑了观测到的光发射线的波长不确定性范围内所有可能的数据库转换，并计算每个候选线的近似强度。它搜索期望在每个候选行中看到的其他多个成员，并根据一组标准对每个观察行的所有暂定行标识进行排序。当应用于猎户座星云和行星状星云IC 418的光谱时，EMILI推荐的线id与以前传统的手工线分配一致。半自动化程序的存在将推动高信噪比光谱的研究，使以前未识别的谱线的识别能够轻松和一致地处理。
The identification of spectral lines can be a tedious process requiring the interrogation of large spectroscopic databases, but it does lend itself to software algorithms that can determine the characteristics of candidate line identifications. We present here criteria used for the identification of lines and a logic developed for a line identification software package called EMILI, which uses the v2.04 Atomic Line List as the basic line database. EMILI considers all possible database transitions within the wavelength uncertainties for observed optical emission lines and computes an approximate intensity for each candidate line. It searches for other multiplet members that are expected to be seen with each candidate line, and rank-orders all of the tentative line identifications for each observed line based on a set of criteria. When applied to the spectra of the Orion Nebula and the planetary nebula IC 418, EMILI's recommended line IDs agree well with those of previous traditional manual line assignments. The existence of a semiautomated procedure should give impetus to the study of very high signal-to-noise spectra, enabling the identification of previously unidentified spectral lines to be handled with ease and consistency.