作为智能体可调用工具的分光双星探测：从SDSS DR19 APOGEE光谱中探测40000+主序双星候选体
Spectroscopic Binary Detection as Agent-Callable Tools: Detecting 40,000+ Main-Sequence Binary Candidates from SDSS DR19 APOGEE Spectra
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中文总结 AI 辅助
本研究将分光双星探测方法打包为智能体可调用工具，从SDSS DR19 APOGEE光谱中探测出41466个SB2双星候选体，新增大量相关天体并完成多项分析，发布工具与星表。
中文摘要 AI 辅助
未分辨双星在光谱巡天中十分常见，它们的混合光会对推断出的参数产生偏差。探测这类双星的方法虽已存在，但将其应用于新的数据发布版本时，主要受限于极少被书面记录的操作知识。我们将El-Badry等人（2018b）提出的双谱线分光双星分解方法打包，使其可复用在APOGEE光谱上，将可执行操作构建为9个基于模型上下文协议（MCP）的工具服务器，操作决策构建为一个技能。在固定驱动脚本下对238205颗DR19矮星运行该分类器，标记出41466个SB2候选体，其质量比q的中位数为0.91，约为DR13中识别出的2645个候选体的15倍，但纯度不匹配。8.1%的控制误报率意味着近40%的候选体是单星，因此我们将该样本作为候选列表发布。对单个观测的重新拟合确认了68.5%的多观测SB2，新增519个单谱线速度变星和8981个可测轨道系统。我们对采样最佳的双星的偏心率进行比较，发现密近双星（q>0.95）与匹配的非密近双星之间无显著差异，排除了宽间距双星中观测到的那种偏心率过剩。对两项操作决策的消融研究表明，新智能体仅在某决策缺失会在拟合中留下可测量痕迹时，才能恢复该缺失决策。我们发布这些工具、该技能以及带有多历元补充的DR19星表。
英文摘要
Unresolved binaries are common in spectroscopic surveys, and their blended light biases the parameters inferred for them. Methods to detect them exist, but applying one to a new data release is limited mostly by operating know-how that is rarely written down. We package the double-lined spectroscopic binary decomposition of El-Badry et al. (2018b) for reuse on APOGEE spectra, with the executable operations as nine tool servers built on the Model Context Protocol (MCP) and the operating decisions as a Skill. Run over the 238,205 DR19 dwarfs under a fixed driver script, the classifier flags 41,466 SB2 candidates with median mass ratio q = 0.91, about fifteen times the 2,645 identified in DR13, though not at matched purity. The 8.1% control false-positive rate implies that close to 40% are single stars, so we release the sample as a candidate list. Refitting the individual visits confirms 68.5% of the multiply-visited SB2 and adds 519 single-lined velocity variables and 8,981 orbit-ready systems. We compare the eccentricities of the best-sampled binaries and find no significant difference between the close twins (q > 0.95) and matched non-twins, which excludes an eccentricity excess of the kind measured at wide separations. An ablation of two operating decisions illustrates that a fresh agent recovers a removed decision only when its absence leaves a measurable trace in the fit. We release the tools, the Skill, and the DR19 catalog with its multi-epoch supplement.
