标题： 不同[M/H]、N/O和C/O条件下的气相平均消光系数 显示英文标题

标题： Gas phase mean opacities for varying [M/H], N/O, and C/O

摘要： 我们提供了一组适用于恒星和行星形成模拟、恒星演化以及氢丰度环境下不同金属丰度的盘状模型的气相普朗克平均和罗森塔尔平均消光系数表。 这些表格计算了气体温度在1000K到10000K之间，总氢数密度在10^2 cm^-3 到 10^17 cm^-3 之间的数据。 碳氧比从0.43变化到远远超过2.0，氮氧比在0.14到100.0之间。 表格计算了金属丰度范围，最低达到[M/H]'= log N_M/N_H=-7.0。 我们展示了平均消光系数和消光物种的丰度如何随着C/O, N/O 和[M/H]'的变化而变化。 我们使用Grevesse, Asplund & Sauval (2007)中的元素丰度，并提供了来自Caffau等(2008)的氧丰度值的额外表格。 所有表格将在http://star-www.st-and.ac.uk/$\sim$ch80/datasources.html在线提供。 显示英文摘要

摘要： We present a set of gas-phase Planck mean and Rosseland mean opacity tables applicable for simulations of star and planet formation, stellar evolution, disk modelling at various metallicities in hydrogen-rich environments. The tables are calculated for gas temperatures between 1000K and 10000K and total hydrogen number densities between 10^2 cm^-3 and 10^17 cm^-3. The carbon-to-oxygen ratio is varied from 0.43 to well above 2.0, the nitrogen-to-oxygen ration between 0.14 and 100.0. The tables are calculated for a range of metallicities down to [M/H]'= log N_M/N_H=-7.0. We demonstrate how the mean opacities and the abundances of the opacity species vary with C/O, N/O, and [M/H]'. We use the element abundances from Grevesse, Asplund & Sauval (2007), and we provide additional tables for the oxygen-abundance value from Caffau et al.(2008). All tables will be available online under http://star-www.st-and.ac.uk/$\sim$ch80/datasources.html