标题： 电离星云金属丰度的经验标定方法的对比分析 显示英文标题

标题： A comparative analysis of empirical calibrators for nebular metallicity

摘要： 我们提出了电离气体星云氧丰度主要经验定标关系的新分析。为此目的，我们汇编了一个包含大量具有发射线数据的天体样本，包括近红外[SIII]谱线和弱辉光线，这些可以用于确定气体电子温度。对于所有天体，氧丰度都以一致的方式得出，使用了最新的原子系数集合，并考虑了粒子密度对O$^+$温度的影响。研究了直接和经验推导的丰度之间的残差与丰度的关系。使用了一组光致电离模型网格，覆盖了气体物理性质的范围，用以解释影响每个丰度定标器不确定性的起源。确定了每个丰度参数的有效范围，并量化了其平均不确定性。 显示英文摘要

摘要： We present a new analysis of the main empirical calibrators of oxygen abundance for ionised gas nebulae. With that aim we have compiled an extensive sample of objects with emission line data including the near IR [SIII] lines and the weak auroral lines which allow for the determination of the gas electron temperature. For all the objects the oxygen abundances have been derived in a homogeneus way, using the most recent sets of atomic coefficients and taking into the account the effect of particle density on the temperature of O$^+$. The residuals between directly and empirically-derived abundances as a function of abundance have been studied. A grid of photo-ionisation models, covering the range of physical properties of the gas, has been used to explain the origin of the uncertainties affecting each abundance calibrator. The range of validity for each abundance parameter has been identified and its average uncertainty has been quantified.