九个矮星的基本恒星参数
收藏arXiv2021-11-01 更新2024-06-21 收录
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http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/
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资源简介:
该数据集包含九个矮星的基本恒星参数,这些星是通过高角分辨率光学干涉仪PAVO在CHARA阵列上观测得到的。数据集的创建机构是海德堡大学天文台,旨在为大型恒星调查提供一组具有高度可靠基本恒星参数的星样本。数据集内容包括星的角直径、有效温度、表面重力及金属丰度等参数。创建过程中,使用了3D辐射流体动力学模型大气中的边缘暗化系数,并直接从斯特藩-玻尔兹曼关系确定有效温度。这些参数对于精确确定观测调查中星的完整基本参数和丰度至关重要。数据集的应用领域包括恒星结构和演化的研究,以及作为参考星来校准和改进用于光谱调查的模型。
This dataset contains fundamental stellar parameters for nine dwarf stars, which were observed using the high-angular-resolution optical interferometer PAVO on the CHARA Array. The dataset was developed by the Heidelberg University Observatory, with the aim of providing a stellar sample with highly reliable fundamental stellar parameters for large-scale stellar surveys. The dataset includes parameters such as the angular diameters, effective temperatures, surface gravities, and metallicities of these stars. During its development, limb-darkening coefficients derived from 3D radiative-hydrodynamic model atmospheres were employed, and the effective temperature was directly determined via the Stefan-Boltzmann relation. These parameters are critical for accurately determining the complete fundamental parameters and abundances of stars in observational surveys. Applications of this dataset cover research into stellar structure and evolution, as well as the use of these stars as reference stars to calibrate and improve models for spectroscopic surveys.
提供机构:
海德堡大学天文台
创建时间:
2021-09-14



