GALA：恒星光谱丰度自动分析工具
GALA: an automatic tool for the abundance analysis of stellar spectra
摘要：
GALA是一个自由分发的Fortran代码，使用基于金属线等效宽度的经典方法自动导出大气参数（温度、重力、微湍流速度和总金属丰度）和单个恒星光谱物种的丰度。使用R.开发的WIDTH 9代码推导出各个谱线的丰度。L.库鲁茨GALA的目的是获得最佳的模式大气，通过优化温度，表面重力，微湍流速度和金属含量，在拒绝的差异线。最后，它计算每个大气参数和丰度的精确内部误差。该代码允许在很短的时间内获得大的恒星样本的化学丰度和大气参数，从而使GALA在多目标摄谱仪和大型调查的时代的有用工具。一组广泛的测试与合成和观察到的光谱进行和讨论，探索的能力和鲁棒性的代码。
英文摘要：
GALA is a freely distributed Fortran code to derive automatically the atmospheric parameters (temperature, gravity, microturbulent velocity and overall metallicity) and abundances for individual species of stellar spectra using the classical method based on the equivalent widths of metallic lines. The abundances of individual spectral lines are derived by using the WIDTH9 code developed by R. L. Kurucz. GALA is designed to obtain the best model atmosphere, by optimizing temperature, surface gravity, microturbulent velocity and metallicity, after rejecting the discrepant lines. Finally, it computes accurate internal errors for each atmospheric parameter and abundance. The code permits to obtain chemical abundances and atmospheric parameters for large stellar samples in a very short time, thus making GALA an useful tool in the epoch of the multi-object spectrographs and large surveys. An extensive set of tests with both synthetic and observed spectra is performed and discussed to explore the capabilities and robustness of the code.
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