The ESA-Ariel mission will include a tier dedicated to exoplanet phase curves corresponding to \(\sim 10\%\) of the science time. We present here the current observing strategy for studying exoplanet phase curves with Ariel. We define science questions, requirements and a list of potential targets. We also estimate the precision of phase curve reconstruction and atmospheric retrieval using simulated phase curves. Based on this work, we found that full-orbit phase variations for 35-40 exoplanets could be observed during the 3.5-yr mission. This statistical sample would provide key constraints on atmospheric dynamics, composition, thermal structure and clouds of warm exoplanets, complementary to the scientific yield from spectroscopic transits/eclipses measurements.

ESA-Ariel任务将包括一层专门用于系外行星相位曲线的层，该曲线对应于科学时间的\（\ sim 10 \％\）。我们在这里介绍与Ariel研究系外行星相位曲线的当前观测策略。我们定义科学问题，要求和潜在目标清单。我们还使用模拟的相位曲线来估算相位曲线重建和大气检索的精度。根据这项工作，我们发现在3.5年的飞行任务中，可以观测到35-40颗系外行星的全轨道相位变化。该统计样本将对大气动力学，成分，热结构和系外行星云提供关键限制，以补充光谱过境/日食测量的科学成果。