发表机构
Tetoora Road Observatory（Tetoora Road 天文台）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究发现沃尔夫-拉叶星WR 59发生了首次记录到的变暗事件，通过高倍率目视监测结合TESS数据确认其为活跃尘埃产生系统，证实该监测方式可分辨拥挤恒星场。
AI 中文摘要
本文呈现了沃尔夫-拉叶星WR 59首次被记录到的变暗事件的目视发现。该星历史上被记录为稳定恒星，视星等约为13.9，在2021年5月的高频率目视监测中突然大幅变暗。2021年5月11日（儒略日2459346），观测到该星亮度骤降1.3等，达到15.2等的极深最小值，它在这种变暗状态下维持约1天后，经历了为期14天的结构化恢复，回到基线亮度。美国国家航空航天局的凌日系外行星勘测卫星（TESS）在第38扇区对该事件进行了独立验证，卫星的校准数据流确认了变暗的时间、结构和恢复过程与地面观测结果相符。尽管一颗亮度为11.7等的近邻伴星对大像素自动巡天管道掩盖了亮度下降的真实深度，但该事件明确证实WR 59是一个活跃的尘埃产生系统，证明了高倍率目视监测能够成功分辨拥挤的恒星场。
英文摘要
This paper presents the visual discovery of the first-ever recorded fading event of the Wolf-Rayet star WR 59. Historically documented as a stable star with an approximate magnitude of 13.9, the star underwent a sudden major decline during high-cadence visual monitoring in May 2021. On 11 May 2021 (JD 2459346), I observed the star plunge 1.3 magnitudes to a deep minimum of magnitude 15.2. It remained in this faded state for roughly 1 day before undergoing a structured 14-day recovery back to its baseline. This episode was independently verified by NASA's Transiting Exoplanet Survey Satellite (TESS) during Sector 38. The satellite's calibrated data stream confirms that the timing, structure, and recovery of the fade matched the ground-based observations. While a close 11.7 V companion star masked the true depth of the drop for automated large-pixel survey pipelines, this event firmly establishes WR 59 as an active dust-producing system. It demonstrates how high-magnification visual monitoring can successfully resolve crowded stellar fields.
Comments6 pages, 4 figures. Presents primary visual data alongside calibrated NASA TESS spaceborne overlays
Journal refBritish Astronomical Association Variable Star Section (BAA VSS) Circular No 209, pp. 15-20 September 2026
