Graves等的氢特征的发射修正。2007年斯隆早期数字巡天仪，非线性巡天仪
Emission Corrections for Hydrogen Features of the Graves et. al 2007 Sloan Digital Sky Survey Averages of Early Type, Non-liner Galaxies
摘要：
为了分析恒星星族分布，在斯隆数字巡天（SDSS）叠加的静止星系光谱中，导出了巴耳末系指数对Lick指数系统的发射修正，以及对连续体形状和总恒星含量的修正，作为Mg $b$ Lick指数强度的函数。这些修正是通过将观测到的SDSS的Lick指数与新观测到的13个室女星系团星系的Lick指数进行比较得到的，并与模型网格进行了检验。根据H $α$ Mg $b$图，使用最佳拟合趋势线构建观察到的测量值的线性校正。修正H $β$，H $γ$和H $δ$构建使用恒星星族模型预测连续形状的变化作为一个功能的Mg $b$和巴耳末系的H{ \sc II}地区的典型发射强度。修正本身是相当可靠的，但H $δ$和H $γ$指数的解释是复杂的，因为H $δ$和H $γ$指数对氢以外的元素丰度敏感。
英文摘要：
For purposes of stellar population analysis, emission corrections for Balmer series indices on the Lick index system in Sloan Digital Sky Survey (SDSS) stacked quiescent galaxy spectra are derived, along with corrections for continuum shape and gross stellar content, as a function of the Mg $b$ Lick index strength. These corrections are obtained by comparing the observed Lick index measurements of the SDSS with new observed measurements of 13 Virgo Cluster galaxies, and checked with model grids. From the H$α$ Mg $b$ diagram a linear correction for the observed measurement is constructed using best fit trend lines. Corrections for H$β$, H$γ$ and H$δ$ are constructed using stellar population models to predict continuum shape changes as a function of Mg $b$ and Balmer series emission intensities typical of H{\sc II} regions. The corrections themselves are fairly secure, but the interpretation for H$δ$ and H$γ$ indices is complicated by the fact that the H$δ$ and H$γ$ indices are sensitive to elemental abundances other than hydrogen.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
