Anomalies among the daughter nuclei of the extinct short-lived radionuclides in calcium–aluminium-rich inclusions indicate that the Solar System must have been born near a source of the short-lived radionuclides so that they could be incorporated before they decayed away¹. γ-rays from one such living short-lived radionuclide, ²⁶Al, are detected in only a few nearby star-forming regions. Here we employ multiwavelength observations to demonstrate that one such region, Ophiuchus, containing many prestellar cores that may serve as analogues for the emerging Solar System², is inundated with ²⁶Al from the neighbouring Upper Scorpius association³, and so may provide concrete guidance for how short-lived radionuclide enrichment proceeded in the Solar System, complementary to the meteoritics. We demonstrate via Bayesian forward modelling drawing on a wide range of observational and theoretical results that this ²⁶Al probably (1) arises from supernova explosions, (2) arises from multiple stars, (3) has enriched the gas before the formation of the cores and (4) gives rise to a broad distribution of core enrichment spanning about two orders of magnitude. This means that if the spread in calcium–aluminium-rich inclusion ages is small, as it is in the Solar System, protoplanetary disks must suffer a global heating event.

富含钙铝包裹体中已灭绝的短寿命放射性核素子核的异常表明，太阳系一定是在短寿命放射性核素的来源附近诞生的，因此它们可以在它们衰变之前被吸收¹。来自这样一种短寿命放射性核素²⁶ Al 的 γ 射线仅在附近的几个恒星形成区域中被检测到。在这里，我们采用多波长观测来证明这样一个区域，蛇夫座，包含许多可能作为新兴太阳系²类似物的星前核心，被来自邻近的上天蝎座协会^3的26 Al淹没。，因此可以为太阳系中的短寿命放射性核素浓缩如何进行提供具体指导，以补充陨石。我们利用广泛的观测和理论结果通过贝叶斯正演模型证明，这²⁶ Al 可能（1）来自超新星爆炸，（2）来自多颗恒星，（3）在核心形成之前富集了气体(4) 导致核心富集的广泛分布跨越大约两个数量级。这意味着如果富含钙铝夹杂物的年龄分布很小，就像在太阳系中一样，原行星盘必须遭受全球加热事件。