Comets, as remnants of the solar system’s formation, vary in volatile-refractory content. In situ comet studies, such as the Rosetta mission to 67P/Churyumov–Gerasimenko, provide detailed volatile composition insights, while ground-based studies offer broader comet samples but in fewer species. Comparing 67P’s volatile correlations during the 2 yr Rosetta mission with those from remote sensing gives insights into volatile distribution in the nucleus and factors influencing their release. Our goal is to identify associations between volatiles seen from the ground and those in 67P. Given 67P’s seasonal variations, we segmented the Rosetta mission around 67P into six epochs, reflecting different insolation conditions. It has been suggested that there are at least two different ice matrices, H₂O and CO₂ ice, in which the minor species are embedded in different relative abundances within them. We employed various methodologies to establish associations among volatiles, such as volatile production rates, spatial distributions, patterns in mixing ratio, and local outgassing source locations. We note that different techniques of grouping molecules with respect to H₂O and CO₂ may yield different results. Earth’s atmosphere blocks CO₂; however, due to observed differences between H₂O and C₂H₆ from the ground and between H₂O and CO₂ from comet missions, C₂H₆ is suggested to be a CO₂ proxy. Our study delves into cometary coma molecular correlations, highlighting their associations with H₂O and CO₂ matrices and advancing our understanding of the early solar system comet formation and evolution.

中文翻译：

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彗星核中的母体挥发性放气关联：综合 Rosetta 测量和地面观测

彗星是太阳系形成的残余物，其挥发性难熔物质的含量各不相同。原位彗星研究，例如前往 67P/Churyumov-Gerasimenko 的罗塞塔任务，提供了详细的挥发性成分见解，而地面研究提供了更广泛的彗星样本，但物种较少。将两年罗塞塔任务期间 67P 的挥发物相关性与遥感数据进行比较，可以深入了解原子核中的挥发物分布以及影响其释放的因素。我们的目标是确定从地面看到的挥发物与 67P 中的挥发物之间的关联。考虑到 67P 的季节变化，我们将 67P 左右的 Rosetta 任务分为 6 个时期，反映不同的日照条件。有人认为至少存在两种​​不同的冰基质：H ₂ O 和CO ₂冰，其中次要物种以不同的相对丰度嵌入其中。我们采用各种方法来建立挥发物之间的关联，例如挥发物生产率、空间分布、混合比模式和局部脱气源位置。我们注意到，针对 H ₂ O 和 CO ₂进行分子分组的不同技术可能会产生不同的结果。地球大气层阻挡CO ₂；然而，由于从地面观察到的H ₂ O 和C ₂ H ₆之间以及从彗星任务中观察到的H ₂ O 和CO ₂之间的差异，建议将C ₂ H _{6作为CO 2}替代物。我们的研究深入研究彗星彗发分子相关性，强调它们与 H ₂ O 和 CO ₂基质的关联，并增进我们对早期太阳系彗星形成和演化的理解。