SPHINX M-dwarf Spectral Grid

SPHINX M-dwarf Spectral Grid是由亚利桑那州立大学地球与空间探索学院开发的一个新的低分辨率（R∼250）1-D自洽辐射对流热化学平衡模型大气和光谱网格，用于表征M型矮星。该数据集包含20个模型，覆盖了M型矮星的有效温度、重力、金属丰度和碳氧比等基本参数。数据集通过整合最新的预计算吸收截面数据，特别是对晚期K型和M型星大气中占主导地位的关键分子进行了适当的压力展宽处理。SPHINX数据集的应用领域包括改进对系外行星宿主星和晚期褐矮伴星的基本恒星性质的约束，以及理解恒星形成、动力学、分子形成、大气不透明度和能量平衡等过程。

The SPHINX M-dwarf Spectral Grid is a novel low-resolution (R∼250) 1-D self-consistent radiative-convective thermochemical equilibrium model atmosphere and spectral grid developed by the School of Earth and Space Exploration at Arizona State University, designed to characterize M-type dwarf stars. This dataset consists of 20 models covering fundamental parameters of M-dwarfs including effective temperature, gravity, metallicity, and carbon-to-oxygen ratio. The dataset incorporates state-of-the-art precomputed absorption cross-section data, with appropriate pressure broadening treatments applied to key molecular species that dominate the atmospheres of late-K and M-type stars. Applications of the SPHINX grid include improving constraints on the fundamental stellar properties of exoplanet host stars and late-type brown dwarf companions, as well as advancing the understanding of processes such as star formation, stellar dynamics, molecular formation, atmospheric opacity, and energy balance.