Recently, a noticeable number of new star clusters was identified in the outskirts of the Large Magellanic Cloud (LMC) populating the so-called star-cluster age gap, a space of time (∼4–12 Gyr) where the only known star cluster is up-to-date ESO 121-SC 03. We used Survey of the Magellanic Stellar History DR2 data sets, as well as those employed to identify these star-cluster candidates, to produce relatively deep color–magnitude diagrams (CMDs) of 17 out of 20 discovered age-gap star clusters with the aim of investigating them in detail. Our analysis relies on a thorough CMD cleaning procedure of the field-star contamination, which presents variations in its stellar density and astrophysical properties, such as luminosity and effective temperature, around the star-cluster fields. We built star-cluster CMDs from stars with membership probabilities assigned from the cleaning procedure. These CMDs and their respective spatial distribution maps favor the existence of LMC star field density fluctuations rather than age-gap star clusters, although a definitive assessment on them will be possible from further deeper photometry.

最近，在大麦哲伦星云 (LMC) 的外围发现了大量新星团，这些星团填充了所谓的星团年龄差距，这是一个时间空间（~4-12 Gyr），其中唯一已知的星团是最新的 ESO 121-SC 03。我们使用了麦哲伦恒星历史 DR2 数据集的调查，以及用于识别这些星团候选者的数据集，以生成相对较深的 17 色星等图 (CMD)在 20 个已发现的年龄差距星团中，目的是对它们进行详细研究。我们的分析依赖于对场星污染的彻底 CMD 清洁程序，该程序在星团场周围呈现出其恒星密度和天体物理特性（例如光度和有效温度）的变化。我们从恒星构建了星团 CMD，其成员概率由清洁程序分配。这些 CMD 及其各自的空间分布图有利于 LMC 星场密度波动的存在，而不是年龄差距星团的存在，尽管通过更深入的光度测量可以对它们进行明确的评估。