Hinode/EIS spectra and Gaussian fit parameters for cool loop footpoint datasets

Contains derived data for the article "Updated reference wavelengths for Si VII and Mg VII lines in the 272-281 Angstrom range" submitted to The Astrophysical Journal and authored by Dr. Peter Young (NASA Goddard Space Flight Center). The zip file contains 13 sub-directories corresponding to the 13 datasets studied in the article. In each directory there are two files: an IDL save file, and an ASCII text file. Upon restoring the IDL save file into IDL, you will see four quantities (the names may vary slightly between datasets): MAP: an IDL map containing the Si VII 275.37 image from which the pixel mask was selected. MASK: a pixel mask generated with the routine pixel_mask_gui.pro using the input MAP. The pixels in the map are used to create the spectrum. SWSPEC: A spectrum structure generated with the routine eis_mask_spectrum.pro containing the EIS short-wavelength channel spectrum. LWSPEC: A spectrum structure generated with the routine eis_mask_spectrum.pro containing the EIS long-wavelength channel spectrum. LWSPEC was input to the Gaussian-fitting routine spec_gauss_eis.pro and fits were generated for the emission lines listed in the article. The routine writes the fit parameters to the ASCII text file. The Gaussian fit parameters can be read into IDL using the routine read_line_fits.pro. You can also use the routine line_fits_summary.pro to generate a printout of the fit parameters. The IDL software described here is available with the Solarsoft repository (https://sohoftp.nascom.nasa.gov/solarsoft/).

本数据集包含提交给《天体物理学杂志》（The Astrophysical Journal）、由彼得·杨博士（美国国家航空航天局戈达德太空飞行中心）撰写的论文《272-281埃（Angstrom）波段硅VII（Si VII）和镁VII（Mg VII）谱线的更新参考波长》的衍生数据。该压缩包包含13个子目录，分别对应论文中研究的13组数据集。每个子目录下均存有两个文件：一个交互式数据语言（IDL，Interactive Data Language）保存文件与一个ASCII文本文件。将该IDL保存文件加载至IDL环境后，可得到四个变量（不同数据集的变量名可能存在细微差异）：
MAP：包含用于选取像素掩膜的Si VII 275.37埃图像的IDL地图对象。
MASK：通过程序pixel_mask_gui.pro基于输入MAP生成的像素掩膜，该地图中的像素将用于构建光谱。
SWSPEC：通过程序eis_mask_spectrum.pro生成的光谱结构，对应极紫外成像光谱仪（EIS，Extreme-ultraviolet Imaging Spectrometer）短波通道光谱。
LWSPEC：同样通过eis_mask_spectrum.pro生成的光谱结构，对应EIS长波通道光谱。
LWSPEC被输入至高斯拟合程序spec_gauss_eis.pro，针对论文中列出的发射谱线生成拟合结果。该程序会将拟合参数写入配套的ASCII文本文件。用户可通过程序read_line_fits.pro将高斯拟合参数导入IDL环境，也可使用line_fits_summary.pro生成拟合参数的打印输出。本文提及的IDL软件可通过Solarsoft软件库获取，获取地址为：https://sohoftp.nascom.nasa.gov/solarsoft/