利用盖亚DR3视差和近红外测光法估计五个博克球状体的距离：用三维尘埃图进行验证
Distance Estimates to Five Bok Globules Using Gaia DR3 Parallaxes and Near-Infrared Photometry: Validation with 3D Dust Maps
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中文总结 AI 辅助
研究利用近红外消光技术结合盖亚DR3视差估计五个博克球状体距离，通过消光 -距离剖面图得出各球状体中值距离，加权平均值相符，经三维尘埃图验证，为相关研究提供改进基础。
中文摘要 AI 辅助
由于小型不透明博克球状体尺寸紧凑且缺乏嵌入的标准烛光，难以获得其精确距离。我们使用应用于2MASS测光的近红外消光技术，并结合盖亚DR3视差得出的恒星距离，来估计五个球状体（CB4、CB24、CB56、CB60和CB188）的距离。消光 - 距离剖面图显示出每个云团的明显上升，得出各球状体的中值距离。加权平均值在8.％以内相符，基于四分位距的不确定性在样本中为3 - 9％。用Bayestar19三维尘埃图进行的独立验证支持了CB4和CB188的结果。这些精确距离距离为未来确定云团质量、密度和恒星形成效率提供了改进的基础。
英文摘要
Accurate distances to small, opaque Bok globules are difficult to obtain due to their compact sizes and lack of embedded standard candles. We estimate distances to five globules -- CB4, CB24, CB56, CB60, and CB188 -- using a near-infrared (NIR) extinction technique applied to 2MASS photometry, combined with stellar distances from \textit{Gaia} DR3 parallaxes. Extinction-distance profiles reveal distinct rises marking each cloud, yielding median distances of 766~pc (CB4), 354~pc (CB24), 483~pc (CB56), 1143~pc (CB60), and 926~pc (CB188). Weighted-mean values agree within $8.0\%$, supporting the internal consistency of the method and interquartile-range-based uncertainties span 3-9\% across the sample. Independent validation with Bayestar19 3D dust maps supports the CB4 and CB188 results. These refined distances provide an improved basis for future determinations of cloud masses, densities, and star-formation efficiencies, including the first robust measurement for CB56 and a revised upward distance for CB188.
