猎户座β星之谜：贝特尔布伊假说
The Betelgeuse Enigma: The Betelbuddy Hypothesis
AI总结：
研究通过直接成像确认猎户座β星的伴星存在，其亮度和位置与预测一致，为超新星爆发前兆的讨论提供了新证据。
摘要：
在过去的六年里，猎户座β星已成为新闻焦点，引发了公众广泛关注。从2019年10月开始，猎户座β星经历了一次显著的变暗事件，亮度从0.5等降至1.7等，到2020年2月中旬，亮度减少了三倍。这引发了关于该星即将发生超新星爆发的猜测，即在宇宙爆发前的诡异寂静时刻。在前一篇文章中，作者讨论了最被接受的解释，即由于周期性质量损失释放出大量尘埃颗粒，遮挡了猎户座β星的光线，使其显得更暗。这一解释表明，变暗并非超新星爆发的前兆，因为猎户座β星很可能仍远未达到该阶段。2025年7月21日，通过在8.1米的Gemini North望远镜上的Alopeke仪器的直接成像，确认了伴星的存在。该伴星比猎户座β星暗6等，围绕猎户座β星自身运行，位于超巨星星体的扩展外大气层内。该恒星伴星被检测到的角距离为52毫弧秒，方位角为北偏东115度。这些测量结果，加上其亮度约为比猎户座β星暗6等（在466纳米波长下），与动力学预测非常一致。尽管这只是一个1.5西格玛的检测，但伴星的外观、距离、方位角、亮度差异和估计质量的吻合是合理的，使结果暂且可接受。下一次最佳观测期是2027年11月，我们希望获得更好的观测数据。本文描述了这项研究的有趣转折以及猎户座β星及其伴星贝特尔布伊或西瓦拉的未来前景。
英文摘要：
In the past six years, Betelgeuse has been in the news and drawn significant public interest. Starting in October 2019, Betelgeuse underwent a striking dimming event, fading from magnitude 0.5 to 1.7 by mid February 2020 a threefold decrease in brightness This gave rise to a number of speculative debates that the star was on the verge of a supernova, a moment of eerie quiet before the cosmic outburst. In a previous article, the author discussed the most accepted explanation to the dimming caused by episodic mass loss that released large dust grains, which obscured Betelgeuse's light and made it appear fainter. This interpretation suggested that the dimming was not a precursor to a supernova, as Betelgeuse is likely still far from reaching that stage. On 21 July 2025, the existence of the companion star was confirmed with direct imaging, for the first time, by the alopeke instrument on the 8.1 m Gemini North telescope. The companion is 6 magnitudes fainter than Betelgeuse and orbits close to Betelgeuse itself, within the supergiant star's extended outer atmosphere. The stellar companion was detected at an angular separation of 52 mas and a position angle of 115 deg east of north. These measurements, along with its brightness, being roughly 6 magnitudes fainter than Betelgeuse at 466 nm, are in excellent agreement with dynamical predictions. Although this was only a 1.5 sigma detection, the agreement in the companion's appearance, separation, position angle, magnitude difference, and estimated mass is reasonable, making the result tentatively acceptable. The next optimum period for observations is November 2027, when we hope to get better observations. This article describes the interesting twists and turns of this study and what lies in the future for Betelgeuse and its companion, Betelbuddy or Siwarha.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
