juliensimon/gaia-dr3-white-dwarfs

该数据集是来自Gentile Fusillo等人（2021年）的权威Gaia DR3白矮星目录，包含1,280,266个高置信度白矮星候选体，这些候选体通过ESA Gaia的天体测量和测光数据识别。每个源包括白矮星概率分数（prob_wd）、大气参数（如有效温度和表面重力）、质量估计以及多波段测光数据。白矮星是低质量和中等质量恒星耗尽核燃料后留下的致密恒星残骸，代表了超过95%恒星的最终演化阶段。该目录通过选择赫罗图中白矮星区域的Gaia DR3源构建，并使用基于光谱确认样本训练的随机森林分类器为每个源分配成为真正白矮星的概率。大气参数和质量通过将Gaia测光和视差数据拟合到氢大气（DA）和氦大气（DB）白矮星模型推导得出。数据集还包括关键列如WD J名称、Gaia DR3唯一源标识符、赤经赤纬、视差、各种星等和颜色指数、绝对星等、距离、重归一化单位权重误差等，共157列，涵盖自行、不确定性、消光和径向速度等信息。Gaia DR3 white dwarf candidates from the Gentile Fusillo+ 2021 catalog — 1,280,266 high-confidence WD candidates with atmospheric parameters, masses, and photometry. The definitive Gaia DR3 white dwarf catalog from Gentile Fusillo et al. (2021), containing 1,280,266 high-confidence white dwarf candidates identified from ESA Gaia astrometry and photometry. Each source includes a WD probability score, atmospheric parameters (effective temperature, surface gravity), mass estimates, and multi-band photometry. White dwarfs are the dense stellar remnants left after low- and intermediate-mass stars exhaust their nuclear fuel. They represent the final evolutionary stage of over 95% of all stars. This catalog was constructed by selecting Gaia DR3 sources in the white dwarf region of the Hertzsprung-Russell diagram and assigning each a probability of being a genuine WD (prob_wd) using a random forest classifier trained on spectroscopically confirmed samples. Atmospheric parameters (Teff, log g) and masses were derived by fitting Gaia photometry and parallaxes to hydrogen-atmosphere (DA) and helium-atmosphere (DB) white dwarf models.