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
通过2017-2026年对沃尔夫-拉叶星WR 80的目视和CCD V波段监测，发现该星存在多次偏离稳定基线的光学衰减事件，证实其会发生高度可变的光学消光事件。
AI 中文摘要
对消光严重的沃尔夫-拉叶星WR 80开展2017-2026年的长期目视和CCD V波段监测，发现了偏离其长期稳定基线的光学衰减事件。2017年4月26日（儒略日2457870），使用0.56米（22英寸）望远镜发现其出现深极小值，源从14.6等的基线骤降至15.8等，该6天事件随后经ASAS-SN存档V波段记录验证。2018年7月，目视观测发现一次短时间衰减至15.4等，未被同期电子V波段数据流探测到，表明可能存在CCD滤光片近红外红漏污染导致的遮蔽效应。2023年至2026年初经连续CCD V波段跟踪记录到稳定阶段后，2026年中目视探测到一次长达16天的完整衰减事件，极小值达15.3等。这些组合数据集证实WR 80会发生高度可变的光学消光事件。
英文摘要
Long-term visual and CCD V-band monitoring of the heavily reddened Wolf-Rayet star WR 80 from 2017-2026 reveals optical fading events that depart from its long-term stable baseline. On 26 April 2017 (JD 2457870), I discovered a deep minimum using a 22-inch (0.56-m) telescope, with the source plunging from a baseline of magnitude 14.6 down to magnitude 15.8. This 6-day event was subsequently verified via archival ASAS-SN V-band records. In July 2018, my visual observations identified a short duration fade to magnitude 15.4 that went undetected in concurrent electronic V band data streams, indicating a masking effect likely caused by near-infrared red leak contamination in the CCD filters. Following a stable phase recorded by continuous CCD V-band tracking from 2023 through early 2026, a mid-2026 visual detection caught a full 16-day fading event reaching a minimum magnitude of 15.3. These combined datasets establish that WR 80 undergoes highly variable optical obscuration events.
CommentsTo appear in the British Astronomical Association Variable Star Section (BAA VSS) Circular No 210, December 2026. 6 pages, 3 figures. Details a decade of visual monitoring of WR 80 with archival ASAS-SN V-band cross-verification
